H2H data updated: 2026-07-18 17:48 UTC
Koji Watanabe vs Charles Chang H2H: 1-0
Koji Watanabe holds a 1–0 lead over Charles Chang in their ATP head-to-head. Across 1 main-draw meeting, Koji Watanabe leads 1–0 on hard courts. Most recently, Koji Watanabe won the 1972 Hong Kong third round 6-3 6-0.
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H2H Match Log
| Date | Tournament | Category | Round | Surface | Winner | Score | Loser | Match |
|---|---|---|---|---|---|---|---|---|
| Apr 1, 1972* | Hong Kong | ATP 250 | R32 | Hard | Koji Watanabe | 6-3 6-0 | Charles Chang | Match data |
* Estimated match date where the exact historical date is unavailable.
Career Comparison
| Player | Current | Peak | Pts | Elo | W | L | Win % | GS | 1000 | Finals | 500 | 250 | Titles |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Koji Watanabe | #1,376 | #1,182 | 3 | 1,542 | 11 | 19 | 36.7% | 0 | 0 | 0 | 0 | 0 | 0 |
| Charles Chang | — | — | — | 1,500 | — | — | — | 0 | 0 | 0 | 0 | 0 | 0 |
Career Progression by Age
Seasons are aligned by the age each player spent most of that calendar year. GS and Titles are cumulative career totals through that season.