| 27‑Oct‑2003 | Paris Masters | Carpet | R32 | 36 | 6 | (5)Rainer Schuettler [GER] d. Blake | 4-6 6-2 6-3 | | 0.84 | 5.9% | 4.4% | 54.4% | 54.1% | 45.2% | 2/9 | 1:33 |
| 27‑Oct‑2003 | Paris Masters | Carpet | R64 | 36 | 34 | Blake d. Fernando Gonzalez [CHI] | 6-3 6-4 | | 1.28 | 12.7% | 3.2% | 65.1% | 75.6% | 59.1% | 2/2 | 1:01 |
| 20‑Oct‑2003 | Basel | Carpet | R32 | 39 | 93 | Tomas Behrend [GER] d. Blake | 1-6 6-3 6-4 | | 1.08 | 4.8% | 2.4% | 66.3% | 76.4% | 42.9% | 9/11 | 1:34 |
| 13‑Oct‑2003 | Madrid Masters | Hard | R64 | 39 | 24 | Max Mirnyi [BLR] d. Blake | 7-5 6-2 | | | | | | | | | |
| 6‑Oct‑2003 | Vienna | Hard | R32 | 37 | 70 | (Q)Karol Beck [SVK] d. Blake | 3-6 6-3 7-6(6) | | 1.07 | 3.2% | 4.3% | 55.3% | 71.2% | 45.2% | 5/9 | 1:58 |
| 25‑Aug‑2003 | US Open | Hard | R32 | 35 | 2 | (2)Roger Federer [SUI] d. Blake | 6-3 7-6(4) 6-3 | | 0.71 | 3.9% | 4.7% | 60.9% | 67.9% | 46.0% | 20/23 | 1:59 |
| 25‑Aug‑2003 | US Open | Hard | R64 | 35 | 52 | Blake d. Sargis Sargsian [ARM] | 6-3 6-4 4-6 7-6(6) | | 1.20 | 4.5% | 4.5% | 69.2% | 69.6% | 46.3% | 10/15 | 2:55 |
| 25‑Aug‑2003 | US Open | Hard | R128 | 35 | 27 | Blake d. (27)Mariano Zabaleta [ARG] | 7-6(4) 6-3 6-2 | | 1.48 | 8.0% | 3.0% | 68.0% | 75.0% | 59.4% | 4/6 | 1:49 |
| 18‑Aug‑2003 | Long Island | Hard | F | 41 | 11 | (1)Paradorn Srichaphan [THA] d. Blake | 6-2 6-4 | | 0.67 | 4.8% | 3.2% | 58.1% | 61.1% | 26.9% | 4/9 | 1:10 |
| 18‑Aug‑2003 | Long Island | Hard | SF | 41 | 22 | Blake d. (7)Younes El Aynaoui [MAR] | 6-3 6-1 | | 2.16 | 5.0% | 7.5% | 60.0% | 87.5% | 56.3% | 0/1 | 0:59 |
| 18‑Aug‑2003 | Long Island | Hard | QF | 41 | 39 | Blake d. Jarkko Nieminen [FIN] | 4-6 6-2 6-3 | | 1.47 | 15.2% | 2.5% | 65.8% | 80.8% | 55.6% | 1/2 | 1:30 |
| 18‑Aug‑2003 | Long Island | Hard | R16 | 41 | 17 | Blake d. (3)Tommy Robredo [ESP] | 6-3 6-4 | | 1.38 | 9.8% | 3.3% | 68.9% | 66.7% | 63.2% | 2/4 | 1:01 |
| 18‑Aug‑2003 | Long Island | Hard | R32 | 41 | 44 | Blake d. Jonas Bjorkman [SWE] | 6-1 7-6(4) | | 1.50 | 6.3% | 4.8% | 54.0% | 73.5% | 62.1% | 2/4 | 1:21 |
| 11‑Aug‑2003 | Cincinnati Masters | Hard | R16 | 27 | 4 | (7)Andy Roddick [USA] d. Blake | 7-6(2) 6-2 | | 0.92 | 16.7% | 1.9% | 53.7% | 72.4% | 60.0% | 1/3 | 1:18 |
| 11‑Aug‑2003 | Cincinnati Masters | Hard | R32 | 27 | 12 | Blake d. (11)Sjeng Schalken [NED] | 6-1 6-4 | | 1.37 | 3.7% | 1.9% | 61.1% | 78.8% | 42.9% | 1/2 | 1:05 |
| 11‑Aug‑2003 | Cincinnati Masters | Hard | R64 | 27 | 21 | Blake d. Wayne Ferreira [RSA] | 6-1 7-6(0) | | 1.71 | 11.5% | 0.0% | 63.9% | 84.6% | 59.1% | 2/2 | 1:07 |
| 4‑Aug‑2003 | Canada Masters | Hard | R32 | 26 | 12 | (10)Jiri Novak [CZE] d. Blake | 7-6(5) 6-3 | | 0.83 | 5.0% | 3.8% | 56.3% | 68.9% | 51.4% | 4/6 | 2:13 |
| 4‑Aug‑2003 | Canada Masters | Hard | R64 | 26 | 47 | Blake d. Radek Stepanek [CZE] | 7-6(3) 6-4 | | 1.10 | 3.9% | 7.8% | 53.2% | 78.0% | 50.0% | 7/8 | 1:29 |
| 28‑Jul‑2003 | Washington | Hard | QF | 27 | 1 | (1)Andre Agassi [USA] d. (6)Blake | 3-6 7-5 6-3 | | 0.95 | 9.5% | 4.2% | 57.9% | 74.5% | 47.5% | 5/8 | 1:49 |
| 28‑Jul‑2003 | Washington | Hard | R16 | 27 | 82 | (6)Blake d. Lars Burgsmuller [GER] | 3-6 7-5 6-4 | | 1.15 | 13.5% | 3.4% | 60.7% | 68.5% | 54.3% | 5/10 | 2:01 |
| 28‑Jul‑2003 | Washington | Hard | R32 | 27 | 100 | (6)Blake d. Gregory Carraz [FRA] | 7-6(6) 6-4 | | 1.22 | 12.3% | 4.1% | 65.8% | 83.3% | 60.0% | 4/4 | 1:16 |
| 7‑Jul‑2003 | Newport | Grass | R32 | 24 | 127 | Gregory Carraz [FRA] d. (1)Blake | 7-6(4) 5-7 6-4 | | 0.98 | 10.4% | 7.5% | 55.7% | 79.7% | 38.3% | 8/13 | 2:15 |
| 23‑Jun‑2003 | Wimbledon | Grass | R64 | 27 | 62 | Sargis Sargsian [ARM] d. (26)Blake | 6-2 7-6(3) 6-2 | | 0.69 | 0.9% | 9.1% | 50.9% | 64.3% | 35.2% | 9/16 | 1:54 |
| 23‑Jun‑2003 | Wimbledon | Grass | R128 | 27 | 186 | (26)Blake d. (Q)Todd Larkham [AUS] | 6-3 6-1 6-1 | | 1.75 | 6.6% | 2.6% | 64.5% | 73.5% | 66.7% | 3/3 | 1:13 |
| 26‑May‑2003 | Roland Garros | Clay | R64 | 27 | 43 | Ivan Ljubicic [CRO] d. (24)Blake | 6-3 4-6 7-6(2) 6-4 | | 0.70 | 2.4% | 0.8% | 63.5% | 70.0% | 50.0% | 3/7 | 2:25 |
| 26‑May‑2003 | Roland Garros | Clay | R128 | 27 | 40 | (24)Blake d. Taylor Dent [USA] | 6-4 6-3 7-6(3) | | 1.16 | 1.9% | 3.8% | 61.9% | 69.2% | 50.0% | 7/10 | 1:55 |
| 19‑May‑2003 | Dusseldorf | Clay | RR | 27 | 4 | Carlos Moya [ESP] d. Blake | 7-6(2) 7-5 | | 0.96 | 3.1% | 1.0% | 63.5% | 67.2% | 31.4% | 6/11 | |
| 19‑May‑2003 | Dusseldorf | Clay | RR | 27 | 1 | Lleyton Hewitt [AUS] d. Blake | 6-3 6-3 | | 0.68 | 4.1% | 0.0% | 73.5% | 55.6% | 38.5% | 0/5 | 1:07 |
| 19‑May‑2003 | Dusseldorf | Clay | RR | 27 | 14 | Blake d. Jiri Novak [CZE] | 7-5 4-6 6-3 | | 1.11 | 1.0% | 2.0% | 52.0% | 62.7% | 57.4% | 3/8 | 1:48 |
| 12‑May‑2003 | Hamburg Masters | Clay | R64 | 25 | 29 | Gaston Gaudio [ARG] d. (16)Blake | 6-7(3) 6-1 6-2 | | 0.76 | 9.9% | 4.0% | 56.4% | 59.6% | 50.0% | 10/16 | 1:50 |
| 5‑May‑2003 | Rome Masters | Clay | R64 | 22 | 57 | Radek Stepanek [CZE] d. Blake | 6-2 1-6 6-3 | | 1.01 | 1.3% | 1.3% | 50.0% | 65.8% | 47.4% | 4/9 | 1:33 |
| 21‑Apr‑2003 | Houston | Clay | QF | 25 | 90 | Olivier Mutis [FRA] d. (3)Blake | 6-4 6-7(3) 6-1 | | 0.86 | 4.0% | 4.0% | 61.6% | 49.2% | 47.4% | 7/15 | 2:10 |
| 21‑Apr‑2003 | Houston | Clay | R16 | 25 | 133 | (3)Blake d. Attila Savolt [HUN] | 6-2 7-6(2) | | 1.25 | 4.6% | 3.1% | 72.3% | 74.5% | 55.6% | 3/4 | 1:20 |
| 21‑Apr‑2003 | Houston | Clay | R32 | 25 | 113 | (3)Blake d. Alexander Waske [GER] | 6-4 6-4 | | 1.16 | 8.3% | 6.7% | 63.3% | 73.7% | 50.0% | 1/2 | 1:19 |
| 14‑Apr‑2003 | Monte Carlo Masters | Clay | R32 | 24 | 26 | Guillermo Coria [ARG] d. (15)Blake | 6-0 6-7(3) 6-3 | | 0.76 | 1.1% | 1.1% | 46.2% | 48.8% | 46.0% | 1/8 | 1:58 |
| 14‑Apr‑2003 | Monte Carlo Masters | Clay | R64 | 24 | 54 | (15)Blake d. Dominik Hrbaty [SVK] | 6-3 3-6 6-2 | | 1.25 | 2.5% | 2.5% | 58.0% | 70.2% | 52.9% | 4/7 | 1:33 |
| 17‑Mar‑2003 | Miami Masters | Hard | R32 | 24 | 61 | (WC)Robby Ginepri [USA] d. (21)Blake | 6-3 6-2 | | 0.65 | 2.4% | 4.9% | 58.5% | 50.0% | 47.1% | 3/7 | 0:56 |
| 17‑Mar‑2003 | Miami Masters | Hard | R64 | 24 | 99 | (21)Blake d. Fernando Meligeni [BRA] | 7-6(5) 6-2 | | 1.23 | 1.5% | 1.5% | 58.8% | 67.5% | 57.1% | 1/3 | 1:30 |
| 10‑Mar‑2003 | Indian Wells Masters | Hard | QF | 25 | 24 | Gustavo Kuerten [BRA] d. Blake | 4-6 6-4 6-0 | | 0.81 | 4.2% | 1.4% | 62.5% | 62.2% | 48.1% | 3/8 | 1:34 |
| 10‑Mar‑2003 | Indian Wells Masters | Hard | R16 | 25 | 5 | Blake d. (5)Carlos Moya [ESP] | 5-7 6-3 6-2 | | 1.27 | 5.5% | 4.4% | 60.4% | 63.6% | 61.1% | 4/8 | 1:54 |
| 10‑Mar‑2003 | Indian Wells Masters | Hard | R32 | 25 | 30 | Blake d. Juan Ignacio Chela [ARG] | 6-1 6-4 | | 1.64 | 7.8% | 0.0% | 62.7% | 84.4% | 47.4% | 1/2 | 0:55 |
| 10‑Mar‑2003 | Indian Wells Masters | Hard | R64 | 25 | 71 | Blake d. (WC)Todd Martin [USA] | 6-1 3-6 7-5 | | 1.18 | 10.2% | 2.3% | 60.2% | 73.6% | 40.0% | 5/10 | 1:51 |
| 3‑Mar‑2003 | Scottsdale | Hard | QF | 26 | 38 | Mariano Zabaleta [ARG] d. Blake | 3-6 6-4 6-4 | | 1.02 | 4.0% | 1.0% | 63.4% | 68.8% | 32.4% | 12/18 | 1:51 |
| 3‑Mar‑2003 | Scottsdale | Hard | R16 | 26 | 73 | Blake d. (WC)Thomas Enqvist [SWE] | 7-6(5) 6-7(1) 6-2 | | 1.41 | 9.9% | 5.5% | 58.2% | 86.8% | 55.3% | 0/1 | 1:53 |
| 3‑Mar‑2003 | Scottsdale | Hard | R32 | 26 | 708 | Blake d. (Q)Jay Gooding [AUS] | 6-2 6-2 | | 2.56 | 17.1% | 4.9% | 70.7% | 82.8% | 75.0% | 0/0 | 0:45 |
| 17‑Feb‑2003 | Memphis | Hard | R16 | 23 | 118 | Irakli Labadze [GEO] d. (3)Blake | 7-6(2) 7-5 | | 0.82 | 5.0% | 7.5% | 65.0% | 65.4% | 57.1% | 6/8 | 1:26 |
| 17‑Feb‑2003 | Memphis | Hard | R32 | 23 | 192 | (3)Blake d. Jiri Vanek [CZE] | 6-3 6-0 | | 2.91 | 23.1% | 2.6% | 64.1% | 88.0% | 71.4% | 0/0 | 0:39 |
| 10‑Feb‑2003 | San Jose | Hard | SF | 24 | 2 | (1)Andre Agassi [USA] d. (3)Blake | 6-4 6-2 | | 0.61 | 5.1% | 1.7% | 45.8% | 55.6% | 46.9% | 3/7 | 1:05 |
| 10‑Feb‑2003 | San Jose | Hard | QF | 24 | 60 | (3)Blake d. (7)Nikolay Davydenko [RUS] | 7-5 6-2 | | 1.37 | 5.2% | 3.4% | 60.3% | 68.6% | 65.2% | 2/3 | 1:08 |
| 10‑Feb‑2003 | San Jose | Hard | R16 | 24 | 66 | (3)Blake d. Hyung Taik Lee [KOR] | 6-3 6-2 | | 1.45 | 13.4% | 4.5% | 64.2% | 79.1% | 50.0% | 5/5 | 0:59 |
| 10‑Feb‑2003 | San Jose | Hard | R32 | 24 | 451 | (3)Blake d. (WC)Wayne Black [ZIM] | 6-2 6-4 | | 2.17 | 13.3% | 2.2% | 55.6% | 84.0% | 70.0% | 0/1 | 0:51 |
| 7‑Feb‑2003 | Davis Cup WG R1: CRO vs USA | Carpet | RR | 24 | 60 | Blake d. Mario Ancic [CRO] | 6-1 6-2 7-6(5) | | | | | | | | | |
| 7‑Feb‑2003 | Davis Cup WG R1: CRO vs USA | Carpet | RR | 24 | 52 | Ivan Ljubicic [CRO] d. Blake | 6-3 6-7(5) 6-4 6-3 | | | | | | | | | |
| 13‑Jan‑2003 | Australian Open | Hard | R16 | 28 | 36 | (31)Rainer Schuettler [GER] d. (23)Blake | 6-3 6-4 1-6 6-3 | | 0.80 | 4.0% | 3.0% | 56.0% | 64.3% | 45.5% | 2/8 | 1:55 |
| 13‑Jan‑2003 | Australian Open | Hard | R32 | 28 | 66 | (23)Blake d. Alberto Martin [ESP] | 6-3 4-6 6-2 6-2 | | 1.44 | 4.9% | 2.9% | 63.1% | 75.4% | 52.6% | 3/6 | 2:32 |
| 13‑Jan‑2003 | Australian Open | Hard | R64 | 28 | 42 | (23)Blake d. Jose Acasuso [ARG] | 6-1 6-4 6-4 | | 1.33 | 8.8% | 7.7% | 59.3% | 79.6% | 51.4% | 4/5 | 1:27 |
| 13‑Jan‑2003 | Australian Open | Hard | R128 | 28 | 219 | (23)Blake d. Jiri Vanek [CZE] | 7-6(2) 6-4 6-4 | | 1.18 | 5.8% | 3.9% | 53.4% | 80.0% | 54.2% | 4/6 | 1:51 |
| 6‑Jan‑2003 | Sydney | Hard | R32 | 28 | 5 | (3)Carlos Moya [ESP] d. Blake | 6-3 6-7(6) 6-3 | | 0.74 | 3.4% | 6.0% | 65.0% | 69.7% | 36.6% | 9/14 | 1:08 |
