IW
Isao Watanabe
Last ranked
#330
Career high
#274
Overall record
6-8
Record by surface
| Surface | Wins | Losses | Matches | Win % |
|---|---|---|---|---|
| Clay | 3 | 5 | 8 | 37.5% |
Last 20 matches
| Date | Tournament | Round | Surface | Result | Opponent | Score |
|---|---|---|---|---|---|---|
| 1974-10-13 | Tokyo | Round of 32 | — | L | Jurgen Fassbender | 7-5 6-1 |
| 1974-10-13 | Tokyo | Round of 64 | — | W | Ian Fletcher | W/O |
| 1974-04-08 | Tokyo WCT | Round of 32 | — | L | Tito Vazquez | 5-7 6-2 6-1 |
| 1970-03-14 | Davis Cup G2 QF: HKG vs JPN | Round Robin | — | W | Kenneth Tsui | 6-0 6-0 6-2 |
| 1968-08-13 | Hamburg | Round of 64 | Clay | L | Alex Kurucz | 6-0 6-3 7-5 |
| 1968-07-22 | Hilversum | Round of 64 | Clay | W | Hans Hartoch | 6-4 6-1 |
| 1968-07-22 | Hilversum | Round of 32 | Clay | W | Henk Nijeboer | 6-0 6-4 |
| 1968-07-22 | Hilversum | Round of 16 | Clay | L | Jan Kodes | 6-1 6-1 |
| 1968-07-21 | Gstaad | Round of 32 | Clay | L | Jaime Pinto Bravo | 6-8 7-5 6-3 |
| 1968-07-08 | Dusseldorf | Round of 32 | Clay | L | Nicola Spear | 6-3 6-3 |
| 1968-07-08 | Dusseldorf | Round of 64 | Clay | W | Matthias Mauritz | 6-3 6-1 |
| 1968-06-10 | Bristol | Round of 32 | — | W | Allan Skelton | 3-6 6-3 6-3 |
| 1968-06-10 | Bristol | Round of 16 | — | L | Jim Osborne | 3-6 6-3 7-5 |
| 1968-05-27 | Roland Garros | Round of 128 | Clay | L | Ashley Cooper | W/O |
Most-played opponents
| Opponent | Wins | Losses | Total | H2H |
|---|---|---|---|---|
| Matthias Mauritz | 1 | 0 | 1 | view H2H |
| Henk Nijeboer | 1 | 0 | 1 | view H2H |
| Hans Hartoch | 1 | 0 | 1 | view H2H |
| Allan Skelton | 1 | 0 | 1 | view H2H |
| Kenneth Tsui | 1 | 0 | 1 | view H2H |
| Ian Fletcher | 1 | 0 | 1 | view H2H |
| Jaime Pinto Bravo | 0 | 1 | 1 | view H2H |
| Alex Kurucz | 0 | 1 | 1 | view H2H |
| Ashley Cooper | 0 | 1 | 1 | view H2H |
| Nicola Spear | 0 | 1 | 1 | view H2H |