Koji Watanabe Clay Court Stats & Match Results
Koji Watanabe
Clay Court Statistics Overview
Koji Watanabe has found clay courts difficult, recording 6–10 across 16 matches (37.5%). The numbers point to a surface that has not consistently suited the game — a key area of opportunity on the calendar.
At Grand Slam level (Roland Garros): Koji Watanabe has yet to record a win on clay at this stage — 0–2 across 2 Grand Slam matches. Breaking through here would mark a significant step forward on this surface.
By format on clay — best-of-five: 2–5 (28.6%); best-of-three: 4–5 (44.4%). Markedly stronger in three-set formats; the win rate drops noticeably in five-setters, which has direct implications for Grand Slam performance on clay.
Best season: 1968 — 5–3 (62.5%) from 8 matches. The best single-season display to date — a useful reference point as the clay record continues to develop.
| Date | Tournament | Surface | Round | Wrk | Winner | Lrk | Loser | Score |
|---|---|---|---|---|---|---|---|---|
| 1970-05-25 | Roland Garros | Clay | R128 | - | - | 7-5 6-3 6-1 | ||
| 1970-04-17 | Davis Cup AME F: JPN vs AUS | Clay | RR | - | - | 9-11 6-2 6-1 3-6 6-3 | ||
| 1970-04-17 | Davis Cup AME F: JPN vs AUS | Clay | RR | - | - | 8-6 7-9 6-4 6-0 | ||
| 1969-08-11 | Kitzbuhel | Clay | R32 | - | - | 5-7 6-1 6-3 | ||
| 1969-08-11 | Kitzbuhel | Clay | R16 | - | - | 6-4 8-10 6-2 | ||
| 1969-07-22 | Gstaad | Clay | R32 | - | - | 6-4 6-3 | ||
| 1969-07-14 | Aix-en-Provence | Clay | R32 | - | - | 9-7 6-3 | ||
| 1969-05-26 | Roland Garros | Clay | R128 | - | - | 6-1 6-1 6-1 | ||
| 1968-08-05 | Hamburg | Clay | R32 | - | - | 6-1 7-5 1-6 6-4 | ||
| 1968-08-05 | Hamburg | Clay | R64 | - | - | 6-4 7-5 6-2 |
Matches — Clay