29‑Sep‑1969 | Berkeley | Hard | BR | | | Arthur Ashe [USA] d. Koch | 8-6 | | | | | | | | | |
29‑Sep‑1969 | Berkeley | Hard | SF | | | Stan Smith [USA] d. Koch | 9-7 10-8 | | | | | | | | | |
29‑Sep‑1969 | Berkeley | Hard | QF | | | Koch d. Roy Barth [USA] | 4-6 7-5 6-3 | | | | | | | | | |
29‑Sep‑1969 | Berkeley | Hard | R16 | | | Koch d. Jim Osborne [USA] | 6-4 6-4 | | | | | | | | | |
29‑Sep‑1969 | Berkeley | Hard | R32 | | | Koch d. Rodney Kop [USA] | 7-5 6-0 | | | | | | | | | |
20‑Sep‑1969 | Los Angeles | Hard | QF | | | (16)Cliff Richey [USA] d. Koch | 8-6 5-7 6-4 | | | | | | | | | |
20‑Sep‑1969 | Los Angeles | Hard | R16 | | | Koch d. (12)Dennis Ralston [USA] | 6-1 8-10 6-1 | | | | | | | | | |
20‑Sep‑1969 | Los Angeles | Hard | R32 | | | Koch d. (3)Tony Roche [AUS] | 3-6 7-5 6-3 | | | | | | | | | |
20‑Sep‑1969 | Los Angeles | Hard | R64 | | | Koch d. Jean Baptiste Chanfreau [FRA] | 6-3 6-3 | | | | | | | | | |
27‑Aug‑1969 | US Open | Grass | R64 | | | (3)Tony Roche [AUS] d. Koch | 6-3 6-2 6-4 | | | | | | | | | |
27‑Aug‑1969 | US Open | Grass | R128 | | | Koch d. Armando Cornejo [CHI] | 6-0 6-4 6-2 | | | | | | | | | |
16‑Aug‑1969 | Boston | Grass | R128 | | | Chum Steele [USA] d. Koch | 6-4 6-3 | | | | | | | | | |
31‑Jul‑1969 | Davis Cup EUR SF: GBR vs BRA | Grass | RR | | | Koch d. Mark Cox [GBR] | 4-6 11-13 6-3 8-6 8-6 | | | | | | | | | |
31‑Jul‑1969 | Davis Cup EUR SF: GBR vs BRA | Grass | RR | | | Graham Stilwell [GBR] d. Koch | 7-5 6-4 6-4 | | | | | | | | | |
19‑Jul‑1969 | Davis Cup AME F: BRA vs MEX | Clay | RR | | | Koch d. Joaquin Loyo Mayo [MEX] | 7-5 6-1 6-3 | | | | | | | | | |
19‑Jul‑1969 | Davis Cup AME F: BRA vs MEX | Clay | RR | | | Koch d. Luis Augusto Garcia [MEX] | 4-6 6-1 6-2 6-4 | | | | | | | | | |
7‑Jul‑1969 | Washington | Clay | F | | | Koch d. (2)Arthur Ashe [USA] | 7-5 9-7 4-6 2-6 6-4 | | | | | | | | | |
7‑Jul‑1969 | Washington | Clay | SF | | | Koch d. Mike Belkin [CAN] | 6-2 6-3 | | | | | | | | | |
7‑Jul‑1969 | Washington | Clay | QF | | | Koch d. Charlie Pasarell [USA] | 6-2 6-2 | | | | | | | | | |
7‑Jul‑1969 | Washington | Clay | R16 | | | Koch d. Allan Stone [AUS] | 6-2 6-2 | | | | | | | | | |
7‑Jul‑1969 | Washington | Clay | R32 | | | Koch d. Luis Alberto Ayala [CHI] | 8-6 7-5 | | | | | | | | | |
7‑Jul‑1969 | Washington | Clay | R64 | | | Koch d. Tony Bardsley [CAN] | 6-2 6-3 | | | | | | | | | |
23‑Jun‑1969 | Wimbledon | Grass | R128 | | | Georges Goven [FRA] d. Koch | 6-8 6-3 5-7 6-3 6-4 | | | | | | | | | |
16‑Jun‑1969 | London / Queen's Club | Grass | R128 | | | John Newcombe [AUS] d. Koch | 2-6 6-4 6-4 | | | | | | | | | |
14‑Jun‑1969 | Davis Cup SAM F: CHI vs BRA | | RR | | | Koch d. Patricio Cornejo [CHI] | 7-5 6-3 6-4 | | | | | | | | | |
16‑May‑1969 | Davis Cup SAM SF: COL vs BRA | | RR | | | Jairo Velasco [ESP] d. Koch | 3-6 6-1 6-4 6-4 | | | | | | | | | |
16‑May‑1969 | Davis Cup SAM SF: COL vs BRA | | RR | | | Koch d. William Alvarez [COL] | 6-2 7-5 6-2 | | | | | | | | | |
12‑May‑1969 | Barcelona | Clay | R16 | | | Geoff Masters [AUS] d. (3)Koch | 6-1 6-1 7-5 | | | | | | | | | |
12‑May‑1969 | Barcelona | Clay | R32 | | | (3)Koch d. U Unknown [UNK] | UNK | | | | | | | | | |
12‑May‑1969 | Barcelona | Clay | R64 | | | (3)Koch d. Zan Guerry [USA] | 5-7 0-6 6-4 6-3 6-3 | | | | | | | | | |
21‑Apr‑1969 | Dallas | Carpet | F | | | Stan Smith [USA] d. Koch | 6-3 6-4 | | | | | | | | | |
21‑Apr‑1969 | Dallas | Carpet | SF | | | Koch d. Tom Edlefsen [USA] | 6-4 5-7 6-2 | | | | | | | | | |
21‑Apr‑1969 | Dallas | Carpet | QF | | | Koch d. Jim Mcmanus [USA] | 1-6 6-3 6-4 | | | | | | | | | |
21‑Apr‑1969 | Dallas | Carpet | R16 | | | Koch d. Mike Machette [USA] | 6-0 6-4 | | | | | | | | | |
14‑Apr‑1969 | Houston | Clay | QF | | | Rafael Osuna [MEX] d. Koch | 6-4 6-3 | | | | | | | | | |
14‑Apr‑1969 | Houston | Clay | R16 | | | Koch d. Nicola Spear [SRB] | 6-3 6-4 | | | | | | | | | |
14‑Apr‑1969 | Houston | Clay | R32 | | | Koch d. George Taylor [USA] | 6-2 6-1 | | | | | | | | | |
7‑Apr‑1969 | Mexico City | Clay | F | | | (1)Koch d. (2)Rafael Osuna [MEX] | 6-3 6-4 10-8 | | | | | | | | | |
7‑Apr‑1969 | Mexico City | Clay | SF | | | (1)Koch d. (4)Ismail El Shafei [EGY] | 6-2 8-6 4-6 6-2 | | | | | | | | | |
7‑Apr‑1969 | Mexico City | Clay | QF | | | (1)Koch d. Federico Cervantes [MEX] | 6-1 6-0 | | | | | | | | | |
7‑Apr‑1969 | Mexico City | Clay | R16 | | | (1)Koch d. Pedro Langre [MEX] | 6-2 6-2 | | | | | | | | | |
7‑Apr‑1969 | Mexico City | Clay | R32 | | | (1)Koch d. Antonio Gonzalez [ESP] | 6-2 6-1 | | | | | | | | | |
31‑Mar‑1969 | San Juan | Hard | R16 | | | Jaime Fillol [CHI] d. Koch | 6-4 3-6 6-3 | | | | | | | | | |
31‑Mar‑1969 | San Juan | Hard | R32 | | | Koch d. Gerald Battrick [GBR] | 6-8 6-3 10-8 | | | | | | | | | |
24‑Mar‑1969 | New York | Carpet | R32 | | | Earl Butch Buchholz [USA] d. Koch | 4-6 6-3 6-2 | | | | | | | | | |
10‑Mar‑1969 | Barranquilla | Clay | QF | | | Ilie Nastase [ROU] d. Koch | 6-2 7-5 | | | | | | | | | |
3‑Mar‑1969 | Caracas | Clay | F | | | Koch d. Mark Cox [GBR] | 8-6 6-3 2-6 6-4 | | | | | | | | | |
3‑Mar‑1969 | Caracas | Clay | SF | | | Koch d. Jan Kodes [CZE] | 1-6 6-4 11-9 6-3 | | | | | | | | | |
3‑Mar‑1969 | Caracas | Clay | QF | | | Koch d. Jaime Fillol [CHI] | 6-0 6-2 | | | | | | | | | |
3‑Mar‑1969 | Caracas | Clay | R16 | | | Koch d. Peter Curtis [GBR] | 6-2 12-10 | | | | | | | | | |
3‑Mar‑1969 | Caracas | Clay | R32 | | | Koch d. David Tate [CAR] | 6-2 6-2 | | | | | | | | | |
24‑Feb‑1969 | Kingston | Hard | F | | | Koch d. Milan Holecek [CZE] | 6-2 6-3 | | | | | | | | | |
24‑Feb‑1969 | Kingston | Hard | SF | | | Koch d. Hans Jaochim Plotz [GER] | 6-3 6-3 | | | | | | | | | |
24‑Feb‑1969 | Kingston | Hard | QF | | | Koch d. Nicola Spear [SRB] | 6-2 7-9 6-4 | | | | | | | | | |
24‑Feb‑1969 | Kingston | Hard | R16 | | | Koch d. Brandon Walsh [JAM] | 6-1 6-2 | | | | | | | | | |
17‑Feb‑1969 | Macon | Carpet | SF | | | Manuel Orantes [ESP] d. Koch | 7-5 3-6 6-2 | | | | | | | | | |
17‑Feb‑1969 | Macon | Carpet | QF | | | Koch d. Robert Wilson [GBR] | 11-9 6-4 | | | | | | | | | |
17‑Feb‑1969 | Macon | Carpet | R16 | | | Koch d. Jim Mcmanus [USA] | 6-3 7-5 | | | | | | | | | |
17‑Feb‑1969 | Macon | Carpet | R32 | | | Koch d. Ove Bengtson [SWE] | 11-9 6-4 | | | | | | | | | |
10‑Feb‑1969 | Salisbury | Hard | R16 | | | Charlie Pasarell [USA] d. Koch | 18-16 6-1 | | | | | | | | | |
10‑Feb‑1969 | Salisbury | Hard | R32 | | | Koch d. Zan Guerry [USA] | 6-1 7-5 | | | | | | | | | |
5‑Feb‑1969 | Philadelphia WCT | Carpet | R16 | | | (7)Richard Gonzalez [USA] d. Koch | 6-3 7-5 | | | | | | | | | |
5‑Feb‑1969 | Philadelphia WCT | Carpet | R32 | | | Koch d. Ron Holmberg [USA] | 7-5 3-6 9-7 | | | | | | | | | |
31‑Jan‑1969 | Richmond | Carpet | F | | | Clark Graebner [USA] d. Koch | 6-3 10-12 9-7 | | | | | | | | | |
31‑Jan‑1969 | Richmond | Carpet | SF | | | Koch d. Arthur Ashe [USA] | 6-4 6-4 | | | | | | | | | |
31‑Jan‑1969 | Richmond | Carpet | QF | | | Koch d. Cliff Richey [USA] | 8-6 6-3 | | | | | | | | | |
26‑Jan‑1969 | Omaha | Hard | R16 | | | Bob Mckinley [USA] d. Koch | 6-3 10-8 | | | | | | | | | |