Koji Watanabe
W-L: 3-7 (30.00%)
Matches
| Date ▼ | Tourney | Surface | Round | Wrk | Winner | Lrk | Loser | Score | H2H | BoF | Min | WA | WDF | W1stIn | W1st% | W2nd% | BPSvd |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1972-03-27 | Hong Kong | Hard | R16 | - |  Colin Dibley | - | Koji Watanabe | 6-3 8-6 | H2H | 3 | - | - | - | - | - | - | - |
| 1972-03-27 | Hong Kong | Hard | R32 | - | Koji Watanabe | - |  Charles Chang | 6-3 6-0 | H2H | 3 | - | - | - | - | - | - | - |
| 1970-06-22 | Wimbledon | Grass | R128 | - |  Ingo Buding | - | Koji Watanabe | 7-5 6-3 4-6 6-3 | H2H | 5 | - | - | - | - | - | - | - |
| 1970-06-15 | Queen's Club | Grass | R64 | - | Stepan Koudelka | - | Koji Watanabe | 6-4 7-5 | H2H | 3 | - | - | - | - | - | - | - |
| 1970-05-25 | Roland Garros | Clay | R128 | - |  Francois Jauffret (11) | - | Koji Watanabe | 7-5 6-3 6-1 | H2H | 5 | - | - | - | - | - | - | - |
| 1970-04-17 | Davis Cup AME F: JPN vs AUS | Clay | RR | - | Dick Crealy | - | Koji Watanabe | 9-11 6-2 6-1 3-6 6-3 | H2H | 5 | - | - | - | - | - | - | - |
| 1970-04-17 | Davis Cup AME F: JPN vs AUS | Clay | RR | - | Allan Stone | - | Koji Watanabe | 8-6 7-9 6-4 6-0 | H2H | 5 | - | - | - | - | - | - | - |
| 1970-04-10 | Davis Cup WG SF: JPN vs VIE | - | RR | - | Koji Watanabe | - |  Van-Bay Vo | 6-2 6-3 6-4 | H2H | 5 | - | - | - | - | - | - | - |
| 1970-04-10 | Davis Cup WG SF: JPN vs VIE | - | RR | - | Koji Watanabe | - | Van-Thanh Vo | 6-3 6-3 6-1 | H2H | 5 | - | - | - | - | - | - | - |
| 1969-08-11 | Kitzbuhel | Clay | R16 | - |  Zeljko Franulovic | - | Koji Watanabe | 6-4 8-10 6-2 | H2H | 3 | - | - | - | - | - | - | - |
Matches