H2H data updated: 2026-07-14 14:15 UTC
I. Watanabe vs Hans Hartoch H2H: 1-0
I. Watanabe leads Hans Hartoch 1–0 in 1 ATP main-draw meeting. I. Watanabe's record is 1–0 on clay courts. Their latest meeting was at Hilversum in 1968, where I. Watanabe won 6-4 6-1.
Browse and filter notable rivalries
Career Comparison
| Metric | I. Watanabe | Hans Hartoch |
|---|---|---|
| Peak Ranking | #274 | — |
| Peak Points | 0 | — |
| Peak Elo | 1,500 | 1,500 |
| Singles W-L | 4–7 | — |
| Win % | 36.4% | — |
| Grand Slam titles | 0 | 0 |
| Masters 1000 titles | 0 | 0 |
| ATP Finals titles | 0 | 0 |
| ATP 500 titles | 0 | 0 |
| ATP 250 titles | 0 | 0 |
| Total titles | 0 | 0 |
H2H Match Log
| Date | Tournament | Category | Round | Surface | Winner | Score | Loser | Match |
|---|---|---|---|---|---|---|---|---|
| Jul 24, 1968* | Hilversum | ATP 250 | R64 | Clay | I. Watanabe | 6-4 6-1 | Hans Hartoch | Match data |