Who Excels at the March Masters?

Italian translation at settesei.it

It’s not quite March Madness, but the March Masters tournaments of Indian Wells and Miami do constitute a unique part of the tennis season.  Though the conditions are different on opposite sides of the continent, it’s hot, and many players are contesting their first important matches since the Australian Open.

I queried my match database to come up with the best career performers at these two tournaments.  Setting aside a few players who have done well in just a couple of showings, here are the top twelve active players, by win percentage at Indian Wells and Miami.  (Incidentally, they are the only twelve with winning percentages over 60%.)

Player                  W   L  Titles   Win%  
Novak Djokovic         40   8       4  83.3%  
Rafael Nadal           57  13       2  81.4%  
Roger Federer          73  19       5  79.3%  
Andy Roddick           58  19       2  75.3%  
Juan Martin Del Potro  19   7       0  73.1%  
Andy Murray            25  11       1  69.4%  
Lleyton Hewitt         42  21       2  66.7%  
Ivan Ljubicic          37  20       1  64.9%  
Tomas Berdych          25  14       0  64.1%  
James Blake            37  21       0  63.8%  
Jo Wilfried Tsonga     13   8       0  61.9%  
Stanislas Wawrinka     14   9       0  60.9%

Del Potro is highest on the list among those without a title at either event.  Roddick’s place so high on the list serves as a reminder that this is his kind of territory–hard courts in the heat.  If he hadn’t played so poorly in his last two events, it would be tempting to pick him as an underdog this month.

If you’re interested in this sort of thing, I hope you’ve started playing around with Tennis Abstract.  One of the latest features to come online is the ability to make multiple selections from a single menu.  For instance, on Ivan Ljubicic’s page, select “Career” from the “Time Span” menu, then open up the “Events” menu on the left-hand side, then select both Indian Wells and Miami, which will show you the matches (and their stats) that add up to his 37-20 record at these tournaments.

2012 Indian Wells Draw Predictions

The Indian Wells draw is out.  With my latest hard-court rankings, I’ve run simulations on the draw.  Qualifiers aren’t yet placed, so I set all of the qualifiers equal to the 100th-ranked player.

I’d like to have some flashy, controversial projections, but the numbers don’t look much different than they did before the Australian Open.  Djokovic has a 27% chance of winning, Nadal 13.2%, with Murray a bit ahead of Federer.  Murray not only rates a bit higher in my ranking system after his latest win over Novak, but he has a somewhat easier draw here.

Here are the full projections:

Player                       R64    R32    R16        W  
(1)Novak Djokovic         100.0%  92.2%  78.9%    27.2%  
Qualifier1                 50.0%   3.9%   1.3%     0.0%  
Qualifier2                 50.0%   3.9%   1.3%     0.0%  
Matthias Bachinger         34.5%  13.1%   1.7%     0.0%  
Philipp Kohlschreiber      65.5%  35.2%   7.3%     0.2%  
(29)Kevin Anderson        100.0%  51.6%   9.5%     0.2%  
                                                         
Player                       R64    R32    R16        W  
(18)Florian Mayer         100.0%  69.5%  37.6%     0.7%  
Robin Haase                72.5%  25.8%  10.4%     0.0%  
Pablo Andujar              27.5%   4.7%   1.0%     0.0%  
Albert Ramos               36.8%   6.7%   1.6%     0.0%  
(WC)Jesse Levine           63.2%  17.8%   6.3%     0.0%  
Richard Gasquet           100.0%  75.5%  43.1%     1.0%  
                                                         
Player                       R64    R32    R16        W  
(12)Nicolas Almagro       100.0%  56.8%  23.8%     0.3%  
Qualifier3                 33.1%  10.6%   2.8%     0.0%  
(WC)Sam Querrey            66.9%  32.6%  13.1%     0.1%  
Santiago Giraldo           80.6%  23.1%  10.2%     0.1%  
(WC)Jack Sock              19.4%   1.8%   0.3%     0.0%  
(17)Kei Nishikori         100.0%  75.1%  49.8%     2.3%  
                                                         
Player                       R64    R32    R16        W  
(30)Andy Roddick          100.0%  62.1%  26.4%     0.6%  
Ivo Karlovic               54.8%  22.0%   7.4%     0.1%  
Lukasz Kubot               45.2%  15.9%   4.6%     0.0%  
Alex Bogomolov Jr.         48.3%  11.3%   4.6%     0.0%  
Sergiy Stakhovsky          51.7%  12.8%   5.3%     0.0%  
(7)Tomas Berdych          100.0%  75.8%  51.7%     3.8%  
                                                         
Player                       R64    R32    R16        W  
(4)Andy Murray            100.0%  83.3%  64.7%    10.0%  
Guillermo Garcia Lopez     80.3%  15.5%   7.3%     0.1%  
Rui Machado                19.7%   1.2%   0.2%     0.0%  
Flavio Cipolla             40.2%  13.9%   2.7%     0.0%  
Ryan Harrison              59.8%  26.5%   6.8%     0.1%  
(25)Viktor Troicki        100.0%  59.6%  18.2%     0.3%  
                                                         
Player                       R64    R32    R16        W  
(23)Stanislas Wawrinka    100.0%  79.2%  48.0%     1.8%  
Qualifier4                 61.7%  14.7%   4.9%     0.0%  
(WC)Robby Ginepri          38.3%   6.1%   1.5%     0.0%  
Qualifier5                 42.6%  11.7%   3.5%     0.0%  
Dudi Sela                  57.4%  19.3%   6.8%     0.0%  
(13)Gilles Simon          100.0%  69.1%  35.4%     0.8%  
                                                         
Player                       R64    R32    R16        W  
(11)John Isner            100.0%  73.7%  46.1%     1.2%  
Qualifier6                 50.0%  13.2%   5.0%     0.0%  
Qualifier7                 50.0%  13.1%   5.0%     0.0%  
Qualifier8                 48.0%  15.5%   5.0%     0.0%  
Nicolas Mahut              52.0%  17.8%   6.1%     0.0%  
(22)Juan Monaco           100.0%  66.7%  32.9%     0.4%  
                                                         
Player                       R64    R32    R16        W  
(32)Julien Benneteau      100.0%  69.1%  29.4%     0.4%  
Qualifier9                 54.2%  17.7%   4.7%     0.0%  
Igor Kunitsyn              45.8%  13.2%   3.1%     0.0%  
Andreas Seppi              56.1%  18.0%   9.4%     0.1%  
Olivier Rochus             43.9%  12.0%   5.5%     0.0%  
(8)Mardy Fish             100.0%  70.0%  48.0%     2.5%  
                                                         
Player                       R64    R32    R16        W  
(5)David Ferrer           100.0%  67.6%  51.5%     2.2%  
Ivan Dodig                 54.9%  18.8%  11.7%     0.1%  
Grigor Dimitrov            45.1%  13.6%   7.9%     0.0%  
Yen-Hsun Lu                40.7%  26.7%   7.7%     0.0%  
Denis Istomin              59.3%  43.7%  16.0%     0.1%  
(31)Juan Ignacio Chela    100.0%  29.6%   5.2%     0.0%  
                                                         
Player                       R64    R32    R16        W  
(19)Fernando Verdasco     100.0%  62.3%  23.1%     0.4%  
Cedrik-Marcel Stebe        56.1%  22.5%   6.5%     0.0%  
Ryan Sweeting              43.9%  15.2%   3.8%     0.0%  
Qualifier10                50.1%   7.9%   2.7%     0.0%  
Qualifier11                49.9%   7.9%   2.7%     0.0%  
(9)Juan Martin Del Potro  100.0%  84.2%  61.3%     6.3%  
                                                         
Player                       R64    R32    R16        W  
(14)Gael Monfils          100.0%  72.9%  51.1%     2.8%  
Nikolay Davydenko          65.9%  20.6%  10.7%     0.1%  
Qualifier12                34.1%   6.5%   2.4%     0.0%  
Lukas Rosol                42.2%  13.4%   3.2%     0.0%  
Thomaz Bellucci            57.8%  22.6%   6.9%     0.0%  
(20)Jurgen Melzer         100.0%  64.0%  25.6%     0.3%  
                                                         
Player                       R64    R32    R16        W  
(27)Milos Raonic          100.0%  74.4%  28.2%     1.0%  
Carlos Berlocq             26.0%   3.4%   0.3%     0.0%  
Benoit Paire               74.0%  22.2%   4.9%     0.0%  
Dmitry Tursunov            49.9%   8.4%   3.0%     0.0%  
(WC)Denis Kudla            50.1%   8.3%   3.0%     0.0%  
(3)Roger Federer          100.0%  83.4%  60.7%     8.7%  
                                                         
Player                       R64    R32    R16        W  
(6)Jo-Wilfried Tsonga     100.0%  71.2%  56.0%     4.6%  
Michael Llodra             46.4%  12.6%   7.4%     0.1%  
Ernests Gulbis             53.6%  16.1%   9.9%     0.1%  
Xavier Malisse             56.9%  27.0%   7.2%     0.0%  
Qualifier13                43.1%  17.4%   3.7%     0.0%  
(28)Radek Stepanek        100.0%  55.6%  15.8%     0.1%  
                                                         
Player                       R64    R32    R16        W  
(24)Marin Cilic           100.0%  60.1%  30.6%     0.9%  
Potito Starac              17.1%   2.5%   0.4%     0.0%  
David Nalbandian           82.9%  37.4%  17.3%     0.3%  
Bernard Tomic              74.2%  38.0%  20.7%     0.7%  
Gilles Muller              25.8%   7.0%   2.1%     0.0%  
(10)Janko Tipsarevic      100.0%  55.0%  29.1%     0.9%  
                                                         
Player                       R64    R32    R16        W  
(15)Feliciano Lopez       100.0%  47.8%  24.2%     0.3%  
Jeremy Chardy              36.0%  15.5%   6.8%     0.0%  
Marcos Baghdatis           64.0%  36.7%  21.2%     0.6%  
Donald Young               54.1%  21.5%   9.0%     0.1%  
Steve Darcis               45.9%  16.6%   6.2%     0.0%  
(21)Alexandr Dolgopolov   100.0%  61.9%  32.5%     0.7%  
                                                         
Player                       R64    R32    R16        W  
(26)Marcel Granollers     100.0%  67.6%  20.2%     0.6%  
Jarkko Nieminen            85.5%  31.1%   6.5%     0.0%  
Tommy Haas                 14.5%   1.3%   0.1%     0.0%  
Alejandro Falla            68.3%  10.0%   3.9%     0.0%  
Leonardo Mayer             31.7%   2.4%   0.5%     0.0%  
(2)Rafael Nadal           100.0%  87.7%  68.8%    13.2%

(For those eagle-eyed readers, qualifiers don’t all have identical chances against each other because I’m running a Monte Carlo simulation, running the bracket 100,000 times. This method occasionally results in slight errors, or tiny changes from one simulation to the next.)

Hard Court Rankings: 6 March 2012

It’s been a while since I posted new rankings.  To help get us ready for Indian Wells, here are my latest hard court rankings.  They are considerably more predictive the the ATP rankings, by considering two years’ worth of matches, surface, location, age, and weighting recent results more heavily. If this is your first time, click here to read more about the methodology.

As usual, there are plenty of surprises.  Despite Federer’s defeat of Murray last weekend, Murray has overtaken Roger in my rankings–just barely.  My numbers take into account quality of opponent, so my guess is that Murray’s win over Djokovic in the semifinals put him over the top.

Because younger players improve faster, my rankings consider each player’s age.  As usual, you’ll find Tomic and Harrison ranked higher than in the ATP rankings.  The shock, though, is Denis Kudla, #70 in my system.  The ATP rankings have him barely inside the top 200.

On the flip side, these rankings demote several players who have racked up points at lesser events.  Isner is at #20 (in part because my system doesn’t count Davis Cup) and Bogomolov is all the way down at #66.

Here is the current hard-court top 100:

RANK  PLAYER                   PTS  
1     Novak Djokovic          7437  
2     Rafael Nadal            4560  
3     Andy Murray             3778  
4     Roger Federer           3757  
5     Juan Martin del Potro   2919  
6     Jo-Wilfried Tsonga      2663  
7     Tomas Berdych           2476  
8     Gael Monfils            2231  
9     Kei Nishikori           1943  
10    David Ferrer            1833  
11    Mardy Fish              1806  
12    Stanislas Wawrinka      1613  
13    Robin Soderling         1599  
14    Bernard Tomic           1543  
15    Milos Raonic            1486  
16    Marcos Baghdatis        1486  
17    Janko Tipsarevic        1449  
18    Marin Cilic             1424  
19    Richard Gasquet         1406  
20    John Isner              1314  

RANK  PLAYER                   PTS  
21    Florian Mayer           1274  
22    Gilles Simon            1265  
23    Alexander Dolgopolov    1259  
24    Marcel Granollers       1202  
25    Andy Roddick            1195  
26    David Nalbandian        1131  
27    Fernando Verdasco       1108  
28    Philipp Kohlschreiber   1083  
29    Feliciano Lopez         1050  
30    Jurgen Melzer           1019  
31    Viktor Troicki          1004  
32    Ernests Gulbis          1001  
33    Nicolas Almagro          986  
34    Samuel Querrey           982  
35    Juan Monaco              968  
36    Mikhail Youzhny          955  
37    Julien Benneteau         953  
38    Kevin Anderson           910  
39    Nikolay Davydenko        875  
40    Ivan Dodig               857  

RANK  PLAYER                   PTS  
41    Michael Llodra           852  
42    Ivan Ljubicic            817  
43    Mikhail Kukushkin        798  
44    Andreas Seppi            788  
45    Ivo Karlovic             773  
46    Jeremy Chardy            756  
47    Lukas Lacko              741  
48    Ryan Harrison            740  
49    Donald Young             739  
50    Denis Istomin            719  
51    Philipp Petzschner       717  
52    Guillermo Garcia-Lopez   704  
53    Cedrik-Marcel Stebe      691  
54    Grigor Dimitrov          681  
55    Sergey Stakhovsky        669  
56    Santiago Giraldo         661  
57    Adrian Mannarino         654  
58    Andrei Goloubev          648  
59    Radek Stepanek           645  
60    Igor Andreev             645  

RANK  PLAYER                   PTS  
61    Steve Darcis             641  
62    Jurgen Zopp              640  
63    David Goffin             638  
64    Robin Haase              632  
65    Jarkko Nieminen          628  
66    Alex Bogomolov           620  
67    Lukasz Kubot             615  
68    Thiemo de Bakker         605  
69    Thomaz Bellucci          603  
70    Denis Kudla              601  
71    Olivier Rochus           588  
72    Daniel Brands            581  
73    Alejandro Falla          575  
74    Dudi Sela                570  
75    Xavier Malisse           565  
76    Richard Berankis         564  
77    Dmitry Tursunov          558  
78    Igor Sijsling            558  
79    Vasek Pospisil           557  
80    Benoit Paire             548  

RANK  PLAYER                   PTS  
81    Matt Ebden               544  
82    Laurynas Grigelis        523  
83    James Blake              517  
84    Matthias Bachinger       511  
85    Tobias Kamke             510  
86    Marius Copil             510  
87    Benjamin Becker          504  
88    Ryan Sweeting            500  
89    Jesse Levine             498  
90    Roberto Bautista         483  
91    Michael Zverev           480  
92    Flavio Cipolla           480  
93    Fabio Fognini            479  
94    Jesse Huta Galung        478  
95    Michael Berrer           475  
96    Grega Zemlja             470  
97    Yen-Hsun Lu              465  
98    James Ward               460  
99    Nicolas Mahut            452  
100   Ruben Bemelmans          449

One Year of Heavy Topspin

A few weeks ago, a glance through my archives revealed that, today, HeavyTopspin.com is one year old!  We’ve come a long way in that time, pushing tennis research in new directions, getting advanced tennis stats in The Wall Street Journal, and more recently, launching TennisAbstract.com.

Thanks to everyone for reading, and thank you especially to those who comment, whether here on the blog, by email, or on Twitter.  Nods are due in particular to Rick Devereaux, Tom Welsh, Carl Bialik, and Eric from stevegtennis.com.  Slowly, analytical tennis research is getting more popular as well as more fruitful.

Here’s to an even better year two!

Better Players in Smaller Tournaments

Last week, Jurgen Melzer entered the qualifying draw of the ATP Zagreb Indoor event.  Melzer is ranked about #40 in the world; players ranked at least #116 earned direct entry into the main draw.  Melzer decided long after the entry deadline that he wanted some matches in advance of this week’s Davis Cup, so he took the only route remaining open: qualies.

This precise scenario is not a common one.  Because tournament entries must be submitted so early, top players err on the side of entering too many.  If they ultimately decide not to play, there’s usually a convenient injury and an apologetic withdrawal.  When top players do make last-minute decisions, like Melzer did, tournament organizers often have a wild card to spare, giving the star direct entry.

It’s tempting to say that there’s a problem with the early deadlines for tournament entries.  Surely, if players didn’t have to decide so early, they might choose to enter more 250s and 500s.  But the early deadlines are there for a reason.  Not only do they allow players and their entourages to make travel arrangements, but they also lock players in so that tournaments can advertise their lineups.

The problem may not be with early deadlines, but we do have a sub-optimal arrangements.  Players enter tournaments they may not play (and tournaments advertise players who won’t show up), players don’t enter tournaments they may want to play (and events can’t advertise those players), and tournaments have less direct control over their field than they would prefer.  32-draw events only get three wild cards, and they want more.

Here’s my solution: Every withdrawal turns into an additional wild card.

Almost every tournament sees a player or two withdraw after the entry deadline but long before the start of qualifying.  Currently, those openings go to the highest-ranked entrant not yet in the main draw.  It’s not uncommon to see a half-dozen alternates in a main draw, sometimes including guys far down the list, after other alternates have opted for challengers or other ATP events.

Here are some benefits of my proposal:

  • Most obviously, tournaments have more control over their draws.  Rather than admitting a handful of players ranked between #100 and #120, they can add the top-tenner who lost his first-round match last week.   Or a local hero who just won a challenger.
  • More importantly, fans get (probably) better and (definitely) more crowd-pleasing players.  The best players (regardless of box-office value) are still invited to enter, and tournament directors have more leeway to give the fans what they want.
  • Players have less reason to enter events they may not play.  (Of course, this could become something of a vicious cycle–fewer entries lead to fewer withdrawals, which leads to fewer additional wild cards … which could result in more of these entries.)
  • Players can get into events at the last minute.  Melzer would get his Davis Cup warmup without have to go through qualifying.

There are a few potential drawbacks:

  • Fewer opportunities for journeyman pros.  Under my plan, Melzer would’ve booted Grega Zemlja, a guy to whom the tennis establishment hasn’t exactly granted many favors.  Then again, Zemlja isn’t likely to do much for the tennis establishment, either.
  • Tournaments could use the extra wild cards to weaken a draw with low-ranked locals.  A tournament director wanted to do some favors could easily turn Delray Beach into a clone of the Dallas Challenger.  To avoid that, the rule could be supplemented by stipulating that only one of the additional wild cards could be used on a player outside the top 200.   Any number of variations would maintain the quality of the draw.
  • It’s conceivable that tournaments could pressure players to withdraw, making room for a box-office draw.  That’s an ugly situation to imagine, and an appropriately stringent policy would need to be put in place to prevent it.

The only clear losers here are journeyman pros–the guys who hang around on the fringes of the main draws but would not regularly receive wild cards as compensation.  As much as I like those guys, their occasional entry as an alternate into an ATP 250 main draw is a sacrifice I would be willing to make.

The potential benefits are simply too great.  More good players–and by extension, more good matches–in more tournaments? It is almost too easy.

Introducing TennisAbstract.com

As keen-eyed readers will have noted, my last few posts have included links to a new tennis stats site: TennisAbstract.com. I’ve developed this site over the last few months, and it’s finally ready for the public.

Tennis Abstract is my response to the frustration of finding and filtering match results. For any player in the last 20 years, the site shows you all of his tour-level results. Best of all, you have the ability to sort by any number of stats and identify the exact subset of matches you want to see.

The best way to see what the site has to offer is to go to your favorite player’s page (here’s Djokovic, Nadal, Federer, and Berlocq) and start clicking around. Once you get accustomed to what Tennis Abstract makes possible, you may find it difficult to go back to other results sites. I certainly have.

For all that, the site is very much a work in progress. There are plenty of as-yet unresolved bugs I know about, and there are probably far more that I don’t. I have a long list of features I’d like to add, but as this is just a spare-time project for me, improvements will only be incremental.

As it is now, you can find the full career records of every active player, along with those of many retired greats. You can filter results in more than 10 different ways, and you can find head-to-head results for any pair of players.

One note: The site has been developed using Google Chrome, and it optimized for that browser. It also works very well (maybe even a bit faster) in Firefox. However, there are serious performance issues in Internet Explorer, so for now, you’ll get an error message if you try to use the site in IE. In that case, download Chrome already!

Feedback (especially bug reporting) is welcome. Feel free to comment on this post or drop me an email.

Top Four Domination

Every time the big four fills up all four spots in the semifinals, we hear the same trivia–how rarely the top four seeds all reach the semifinals; how often this particular group of four has done it, and so on.  There’s no doubt that the current big four has dominated men’s tennis in a way that has rarely been seen before.

Words like “domination” aren’t very easy to quantify, which is why commentators fall back on those few bits of trivia.  We can take a closer look to determine whether the current big four stands out as much as we think it does.

Won-loss record

Last year, the big four played 251 tour-level matches (not counting Davis Cup) against everybody else.  They won 228 of them, for a winning percentage of 90.8%.  My database goes back to 1991, and there hasn’t been a year in that time frame where the top four players did any better.

(For today’s purposes, each year’s top four are defined as the four men at the top of the year-end rankings.  All numbers exclude Davis Cup and go back to 1991.)

In fact, four of the five best W-L records have come since 2004.  2008 and 2009, when the current top four was already reigning, are ranked 3rd and 4th.  (The second best season for the top four, by this measure, was 2005, when Andy Roddick and Lleyton Hewitt complemented Roger Federer and Rafael Nadal.)

Slam performance

What really matters are the majors, right?  Last year, the big four played 82 matches against everybody else at the slams, and won 80 of them, for a jaw-dropping 97.6% winning percentage.  You might guess that it, as well, is the best in the last 20 years.

In fact, the second and third best top-four slam performances came in 2007 and 2008–each one including Federer, Nadal, and Novak Djokovic.  (In 2007, Nikolay Davydenko was the year-end number four.)  Both of those years, the top four lost only four grand slam matches to others.

Masters performance

The majors give us a small (though important) sample; the masters series offers more tournaments with similar high-quality fields.  Largely due to Andy Murray‘s dreadful March, this is where the 2011 foursome falters a bit. Their record against everybody else of 90-13 is “only” third-best of the last twenty years.

But wait–the top masters series record was in 2009, of course with the same top four.  And the second-best masters series record was in 2005, when Federer and Nadal ruled the world.

Beating the rest of the top 10

It’s no shock when the top four cruise through the early rounds of tournaments.  What makes the current top four special is the way they regularly shut everyone else out of the last rounds, defeating excellent players such as Jo-Wilfried Tsonga, Tomas Berdych, and Juan Martin Del Potro.

Last year, the top four went 34-12 (73.9%) against the rest of the year-end top 10.  That’s fourth-best of the last twenty years.  The standout season, once again, was 2005, when Federer, Nadal, Roddick, and Hewitt went 30-4 (!) against the next six guys in the rankings.  In both 2004 and 2006, the top four won exactly three-quarters of their matches against five through ten, just beating out last year’s top four.

To put these numbers in perspective, it is by no means a foregone conclusion that the top four beat up on the next six.  In 1991, the top four of Edberg, Courier, Becker, and Stich actually posted a losing record against guys ranked five through ten.  In both 1996 and 2000, the record was an even .500.

The bigger picture

Of course, there’s more to domination than performance in a single year.  Much of the current big four’s reputation stems from their longevity atop the rankings, and looking at single years ignores that.

But as we’ve seen, there’s no need to look at more than one season.  The big four was, in 2011, one of the most dominating quartets of the last 20 years by several measures, and according to two such measures, they were the most successful top four in recent memory.

Why? (In brief)

Here are three theories that might explain why the big four has so distanced itself from the pack:

  1. These four guys are historically good.
  2. The rest of the field these days is not that good.  Or, at least, they are overawed by the big four.
  3. Court speeds have become more uniform, meaning that top players win all year round, instead of a few specialists racking up big points for only a couple months.

The first two are possible.  Certainly, Federer and Nadal are historically good, and Djokovic’s 2011 season was astounding.  I doubt the rest of the pack is to blame–they seem plenty good to me, even if few of them are that good very much of the time.

I’m tempted by the third theory.  As recently as 2003, there was almost always one clay-court specialist in the year-end top four–Juan Carlos Ferrero, Gustavo Kuerten, Sergei Bruguera.  At the same time, guys like Pete Sampras, Pat Rafter, and Goran Ivanisevic rarely made a dent on clay.

Thus, no matter how many slams Sampras won, or how many clay titles Kuerten took, the top four just weren’t dominant year round.  The idea that the same four players would reach the quarters, or even semis of every slam was borderline ridiculous.  Now, it’s almost expected.

Of course, we can argue about the causes of this as well.  Are the top four successful on all surfaces because the surfaces are more uniform?  Because they are historically good?  Because the game (or its equipment) has changed in such a way to make surface differences less meaningful? That’s a subject for another day.

Australian Open Men’s Quarterfinal Projections

The field is down to eight. It still includes the top five seeds and seven of the top ten players in the game, so there’s still plenty of uncertainty. Novak Djokovic showed some chinks in the armor during yesterday’s match against Lleyton Hewitt; Rafael Nadal is never a lock on a hard court; Roger Federer has what may be the toughest quarterfinal draw of the top four; and despite a drubbing last time he played Andy Murray, Kei Nishikori is playing as well as ever.

Oddly enough for such a steady player, this is only David Ferrer‘s second grand slam quarterfinal since 2008 and just his sixth quarterfinal in 36 career slams. In his last slam quarter–Melbourne last year–he beat world number one Nadal. The odds will be even steeper against him this week.

Player                        SF      F      W  
(1)Novak Djokovic          75.4%  49.2%  31.0%  
(5)David Ferrer            24.6%   9.6%   3.4%  
(4)Andy Murray             66.5%  30.9%  16.2%  
(24)Kei Nishikori          33.5%  10.4%   3.8%  

(11)Juan Martin Del Potro  36.0%  14.0%   4.9%  
(3)Roger Federer           64.0%  34.0%  16.4%  
(7)Tomas Berdych           36.6%  15.9%   6.0%  
(2)Rafael Nadal            63.4%  36.1%  18.3%

The Non-Threatening Dr. Ivo

The perception in tennis is that some players are always dark horses, guys who on any given day might play well above their ranking. Often, these players have “top ten talent” coupled with mental lapses–think Gael Monfils, Marcos Baghdatis, Thomaz Bellucci, Philipp Kohlschreiber. Their rankings sag because of brainless losses (Monfils to Lukasz Kubot at Wimbledon, Baghdatis to somebody every third week), but they occasionally flash their brilliance with a surprising result.

Put it together, and you have a dark horse. There’s a special sort of dark horse upon whom everyone seems to agree: the freakishly tall ace machine. Rob Koenig sounds sensible tweeting about Roger Federer‘s third round match against Ivo Karlovic: “Karlovic v Fed?? Even though Fed has a good record against him, he’s not a guy you wanna see on your side of the draw.” That’s the official line before just about every match Ivo or John Isner plays. The unstoppable serves make them capable of anything.

Or do they? A barrage of bombs starting almost ten feet in the air and bouncing over your head doesn’t sound like a fun day on the court, but does it translate into more losses for top players?

The short answer is no. If anything, Karlovic has shown himself far less likely than the average player to perform above or below his ranking. Last August, I created a metric called ‘Upset Score’ designed to measure how often a player wins against a superior opponent or loses to an inferior one. (Player ability is measured by my ranking system, which predicts match outcomes better than ATP rankings and considers surface.) The metric counts extreme upsets more heavily, so Ivo beating David Ferrer is scored as much more meaningful than defeating, say, Stanislas Wawrinka. Of the 87 players who had 40 or more ATP-level matches in the 20-month span I analyzed, Karlovic had the tenth lowest Upset Score.

This flies directly in the face of conventional wisdom. Looking at the current rankings, we find Ivo just below the likes of Santiago Giraldo and Olivier Rochus–neither one of whom would be viewed as a “tricky” third round opponent. Yet both have Upset Scores in the top half of active players. While there’s no doubt Karlovic was once a very dangerous opponent (as his peak ranking of 14 suggests), he has only one top ten scalp in his last twelve tries, dating back to 2009 Wimbledon. We have to go back to the first half of 2007 to find a stretch in which he was a consistent threat to top players.

Isner isn’t as predictable, but delivers fewer upsets than 60% of the guys on tour. Same story as with Ivo: more often than not, he wins and loses according to past performance. Big John has won two of his last fourteen matches against the top ten, and one of those was an ‘upset’ of Nikolay Davydenko, who by this metric is the least predictable man on the tour.

Massive servers may make for more interesting matches–against any opponent, it’s safe to say that Isner and Karlovic are more likely to deliver a tiebreak or four. But if you’re a top player deciding who you’d like to see coming up in your bracket, you probably don’t care whether you win 6-1 or 7-6(8). Whatever the score, Karlovic is best seen as a steady player on the fringes of the top 50, not some loose cannon who will knock out a top seed one day and lose to a qualifier the next.

Australian Open Men’s R32 Projections

The top seven seeds are still alive, so in the big picture, not much has changed since I posted pre-tournament odds.   The big names have all seen their chances of winning creep up a little bit,  largely because they’ve gotten past the dangers of the first two rounds.  Some upsets elsewhere in the draw have helped, as well.

The biggest winner on that score is Juan Martin del Potro, whose chances have jumped from 2.6% to 4.2%, as he’s been granted what should be two easy matches before a quarterfinal showdown with Roger Federer.

Player                       R16     QF     SF        W
(1)Novak Djokovic          91.9%  76.3%  59.2%    26.7%
Nicolas Mahut               8.1%   2.6%   0.7%     0.0%
(23)Milos Raonic           79.8%  19.3%   9.0%     1.1%
(WC)Lleyton Hewitt         20.2%   1.8%   0.3%     0.0%
(9)Janko Tipsarevic        54.6%  28.4%   8.9%     1.3%
(17)Richard Gasquet        45.4%  21.7%   5.9%     0.7%
(27)Juan Ignacio Chela     13.9%   2.3%   0.2%     0.0%
(5)David Ferrer            86.1%  47.7%  15.8%     2.7%  

Player                       R16     QF     SF        W
(4)Andy Murray             81.4%  55.6%  34.5%    10.4%
Michael Llodra             18.6%   6.6%   2.0%     0.1%
Mikhail Kukushkin          23.8%   4.8%   1.2%     0.0%
(14)Gael Monfils           76.2%  33.0%  16.3%     2.9%
Julien Benneteau           31.6%   8.8%   2.3%     0.1%
(24)Kei Nishikori          68.4%  29.6%  12.4%     1.8%
Frederico Gil               8.8%   1.5%   0.1%     0.0%
(6)Jo-Wilfried Tsonga      91.2%  60.1%  31.3%     7.3%  

Player                       R16     QF     SF        W
Alejandro Falla            35.9%   9.6%   1.9%     0.1%
Philipp Kohlschreiber      64.1%  24.7%   7.3%     0.5%
Yen-Hsun Lu                21.6%   9.1%   1.8%     0.1%
(11)Juan Martin Del Potro  78.4%  56.5%  26.4%     4.6%
(13)Alexandr Dolgopolov    49.2%  16.3%   8.3%     0.9%
Bernard Tomic              50.8%  17.2%   8.7%     1.0%
Ivo Karlovic               18.4%   7.0%   2.8%     0.2%
(3)Roger Federer           81.6%  59.5%  42.8%    13.2%  

Player                       R16     QF     SF        W
(7)Tomas Berdych           71.3%  44.9%  20.9%     4.4%
(30)Kevin Anderson         28.7%  12.0%   3.3%     0.2%
(21)Stanislas Wawrinka     64.6%  31.0%  12.3%     1.8%
(10)Nicolas Almagro        35.4%  12.2%   3.3%     0.2%
(16)John Isner             55.1%  17.1%   7.7%     0.9%
(18)Feliciano Lopez        44.9%  12.4%   5.0%     0.5%
(q)Lukas Lacko             13.2%   4.4%   1.2%     0.0%
(2)Rafael Nadal            86.8%  66.1%  46.4%    16.1%