Koji Watanabe
W-L: 6-4 (60.00%)
Matches in 1968
| Date ▼ | Tourney | Surface | Round | Wrk | Winner | Lrk | Loser | Score | H2H | BoF | Min | WA | WDF | W1stIn | W1st% | W2nd% | BPSvd |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1968-09-21 | Davis Cup EUR F: JPN vs IND | - | RR | - |  Ramanathan Krishnan | - | Koji Watanabe | 6-2 3-6 6-3 6-2 | H2H | 5 | - | - | - | - | - | - | - |
| 1968-09-21 | Davis Cup EUR F: JPN vs IND | - | RR | - | Koji Watanabe | - | Premjit Lall | 8-6 6-1 6-2 | H2H | 5 | - | - | - | - | - | - | - |
| 1968-08-05 | Hamburg | Clay | R16 | - |  Wilhelm Bungert (6) | - | Koji Watanabe | 6-3 6-3 7-5 | H2H | 5 | - | - | - | - | - | - | - |
| 1968-08-05 | Hamburg | Clay | R32 | - | Koji Watanabe | - |  Frew McMillan | 6-1 7-5 1-6 6-4 | H2H | 5 | - | - | - | - | - | - | - |
| 1968-08-05 | Hamburg | Clay | R64 | - | Koji Watanabe | - | Uwe Gottschalk | 6-4 7-5 6-2 | H2H | 5 | - | - | - | - | - | - | - |
| 1968-07-22 | Hilversum | Clay | R16 | - |  Phil Dent | - | Koji Watanabe | 3-6 6-3 6-4 | H2H | 3 | - | - | - | - | - | - | - |
| 1968-07-22 | Hilversum | Clay | R32 | - | Koji Watanabe | - |  Paul Van Min | 6-3 6-4 | H2H | 3 | - | - | - | - | - | - | - |
| 1968-07-22 | Hilversum | Clay | R64 | - | Koji Watanabe | - | Peter Ehrlich | 6-1 6-1 | H2H | 3 | - | - | - | - | - | - | - |
| 1968-07-15 | Gstaad | Clay | R16 | - |  Nikola Pilic | - | Koji Watanabe | 5-7 6-4 6-0 | H2H | 3 | - | - | - | - | - | - | - |
| 1968-07-15 | Gstaad | Clay | R32 | - | Koji Watanabe | - |  Giuseppe Merlo | 1-0 RET | H2H | 3 | - | - | - | - | - | - | - |
Matches — 1968