Koji Watanabe
all rivalries →| Opponent | W | L | M | Last Played | H2H |
|---|---|---|---|---|---|
| Francois Jauffret | 0 | 2 | 2 | May 3, 1970 | H2H |
| Colin Dibley | 0 | 1 | 1 | Apr 2, 1972 | H2H |
| Charles Chang | 1 | 0 | 1 | Apr 1, 1972 | — |
| Ingo Buding | 0 | 1 | 1 | Jun 24, 1970 | — |
| Stepan Koudelka | 0 | 1 | 1 | Jun 17, 1970 | — |
H2H data updated: 2026-09-07 00:00 UTC
Koji Watanabe vs Zlatko Ivancic H2H: 1-0
Koji Watanabe holds a 1–0 lead over Zlatko Ivancic in their ATP head-to-head. Across 1 main-draw meeting, Koji Watanabe leads 1–0 on clay. Most recently, Koji Watanabe won the 1969 Austrian Open Kitzbühel round of 32 5-7 6-1 6-3.
Want to explore more matchups? Advanced rivalry search lets you browse current and historical rivalries, unbeaten records, or every matchup for a player.
H2H Match Log
| Player | Score | Player | Match Data | Date | Round | Tournament | Category | Surface |
|---|---|---|---|---|---|---|---|---|
| Koji Watanabe | 5-7 6-1 6-3 | Zlatko Ivancic | Match data | Aug 14, 1969* | R32 | Austrian Open Kitzbühel | ATP 250 | Clay |
Estimated match date where the exact historical date is unavailable. Arrows show an edition's recorded category and documented modern equivalent; unresolved editions keep their recorded category. Asterisked totals include editions mapped from documented historical predecessor categories. Mapping details.
Career Comparison
| Player | Current | Peak | Pts | Elo | W | L | Win % | GS | 1000 including documented historical predecessor categories | Finals | 500 including documented historical predecessor categories | 250 including documented historical predecessor categories | Titles |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Koji Watanabe | — | — | — | 1,544 | 12 | 20 | 37.5% | 0 | 0 | 0 | 0 | 0 | 0 |
| Zlatko Ivancic | #662 | #662 | 0 | 1,500 | 1 | 12 | 7.7% | 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.
| Koji Watanabe | Zlatko Ivancic | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Yr | W-L | Win % | Rank | Elo | GS | Titles | Yr | W-L | Win % | Rank | Elo | GS | Titles |
| 1968 | 7–6 | 53.8% | — | 1,529 | 0 | 0 | 1968 | 0–3 | 0.0% | — | 1,471 | 0 | 0 |
| 1969 | 4–10 | 28.6% | — | 1,471 | 0 | 0 | 1969 | 1–2 | 33.3% | — | 1,463 | 0 | 0 |
| 1970 | 0–3 | 0.0% | — | 1,434 | 0 | 0 | 1970 | 0–1 | 0.0% | — | 1,460 | 0 | 0 |
| 1972 | 1–1 | 50.0% | — | 1,445 | 0 | 0 | 1971 | 0–2 | 0.0% | — | 1,440 | 0 | 0 |
| — | — | — | — | — | — | — | 1973 | 0–1 | 0.0% | — | 1,436 | 0 | 0 |
| — | — | — | — | — | — | — | 1978 | 0–1 | 0.0% | — | 1,430 | 0 | 0 |
| — | — | — | — | — | — | — | 1979 | 0–1 | 0.0% | #662 | 1,425 | 0 | 0 |
| — | — | — | — | — | — | — | 1980 | 0–1 | 0.0% | — | 1,414 | 0 | 0 |
Surface Results by Career Season
Rows are aligned in career order because complete birth data is unavailable. Results cover completed main-draw matches. Bold green marks the higher win percentage when both players have at least 5 matches on that surface at the aligned age.
| Koji Watanabe | Zlatko Ivancic | ||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Yr | Hard | Clay | Grass | Yr | Hard | Clay | Grass | ||||||||||||||||||
| W | L | M | Win % | W | L | M | Win % | W | L | M | Win % | W | L | M | Win % | W | L | M | Win % | W | L | M | Win % | ||
| 1968 | — | — | — | — | 6 | 4 | 10 | 60.0% | 1 | 2 | 3 | 33.3% | 1968 | — | — | — | — | 0 | 2 | 2 | 0.0% | 0 | 1 | 1 | 0.0% |
| 1969 | — | — | — | — | 2 | 4 | 6 | 33.3% | 2 | 6 | 8 | 25.0% | 1969 | — | — | — | — | 1 | 2 | 3 | 33.3% | — | — | — | — |
| 1970 | — | — | — | — | 0 | 1 | 1 | 0.0% | 0 | 2 | 2 | 0.0% | 1970 | — | — | — | — | 0 | 1 | 1 | 0.0% | — | — | — | — |
| 1972 | 1 | 1 | 2 | 50.0% | — | — | — | — | — | — | — | — | 1971 | — | — | — | — | 0 | 2 | 2 | 0.0% | — | — | — | — |
| — | — | — | — | — | — | — | — | — | — | — | — | — | 1973 | — | — | — | — | 0 | 1 | 1 | 0.0% | — | — | — | — |
| — | — | — | — | — | — | — | — | — | — | — | — | — | 1978 | — | — | — | — | 0 | 1 | 1 | 0.0% | — | — | — | — |
| — | — | — | — | — | — | — | — | — | — | — | — | — | 1979 | — | — | — | — | 0 | 1 | 1 | 0.0% | — | — | — | — |
| — | — | — | — | — | — | — | — | — | — | — | — | — | 1980 | — | — | — | — | 0 | 1 | 1 | 0.0% | — | — | — | — |
| Career | 1 | 1 | 2 | 50.0% | 8 | 9 | 17 | 47.1% | 3 | 10 | 13 | 23.1% | Career | — | — | — | — | 1 | 11 | 12 | 8.3% | 0 | 1 | 1 | 0.0% |
Advanced Statistics Comparison by Career Season
Rows are aligned in career order because complete birth data is unavailable. Metrics use eligible main-draw results; point statistics use matches with detailed data. Bold green marks the stronger value when both underlying samples are sufficient. Lower is better for Schedule because a negative value means a tougher schedule. Career Schedule is normalized per 100 matches.
| Koji Watanabe | Zlatko Ivancic | ||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Yr | Elo | P+ | Serve+ | Return+ | PD | TPW% | Hard Elo | Clay Elo | Grass Elo | Set Win % | Set Margin | Dec. Set | Tiebreak | Pressure+ | Schedule | Yr | Elo | P+ | Serve+ | Return+ | PD | TPW% | Hard Elo | Clay Elo | Grass Elo | Set Win % | Set Margin | Dec. Set | Tiebreak | Pressure+ | Schedule |
| 1968 | 1529 | 104.9 | — | — | — | — | — | +37 | -47 | 51.5% | +0.03 | 1–3 (25%) | 1–0 | — | +0.48 | 1968 | 1472 | 93.4 | — | — | — | — | — | — | — | 0.0% | -3.50 | — | — | — | -0.03 |
| 1969 | 1471 | 107.4 | — | — | — | — | — | +65 | -43 | 30.8% | -1.00 | 1–1 | — | — | +0.04 | 1969 | 1463 | 98.2 | — | — | — | — | — | +23 | — | 37.5% | -1.62 | 0–1 | — | — | +0.13 |
| 1970 | 1435 | 99.5 | — | — | — | — | — | — | — | 11.1% | -2.22 | — | — | — | -0.08 | 1970 | 1460 | 104.6 | — | — | — | — | — | — | — | 0.0% | -2.50 | — | — | — | -0.25 |
| 1972 | 1446 | 104.2 | — | — | — | — | — | — | — | 50.0% | +1.00 | — | — | — | +0.35 | 1971 | 1441 | 101.9 | — | — | — | — | — | — | — | 0.0% | -2.60 | — | — | — | -0.06 |
| — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1973 | 1437 | 102.2 | — | — | — | — | — | — | — | 33.3% | -1.33 | 0–1 | — | — | -0.01 |
| — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1978 | 1431 | 102.3 | — | — | — | — | — | — | — | 0.0% | -2.00 | — | 0–1 | — | -0.03 |
| — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1979 | 1425 | 99.0 | — | — | — | — | — | — | — | 0.0% | -4.50 | — | — | — | -0.05 |
| — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1980 | 1415 | 95.5 | — | — | — | — | — | — | — | 0.0% | -3.50 | — | — | — | +0.13 |
| Career | 1545 | 106.4 | — | — | — | — | — | +48 | -44 | 37.6% | -0.64 | 2–4 (33%) | 1–0 | — | +2.55 | Career | 1500 | 98.8 | — | — | — | — | — | +23 | — | 14.3% | -2.46 | 0–2 | 0–1 | — | -1.42 |
Career Rivalries
Each player's five most-played main-draw opponents. The current matchup is highlighted when it appears in a player's top five.
Zlatko Ivancic
all rivalries →| Opponent | W | L | M | Last Played | H2H |
|---|---|---|---|---|---|
| Bernard Fritz | 0 | 1 | 1 | Jul 17, 1980 | H2H |
| Rolf Gehring | 0 | 1 | 1 | Jul 19, 1979 | H2H |
| Ulrich Pinner | 0 | 1 | 1 | Jul 20, 1978 | H2H |
| Hans Jurgen Pohmann | 0 | 1 | 1 | Jul 27, 1973 | H2H |
| Milan Holecek | 0 | 1 | 1 | May 23, 1971 | H2H |