Takao Yamamoto
all rivalries →| Opponent | W | L | M | Last Played | H2H |
|---|---|---|---|---|---|
| Wojtek Fibak | 0 | 1 | 1 | Oct 21, 1981 | H2H |
| Mark Edmondson | 0 | 1 | 1 | Oct 24, 1979 | H2H |
| Geoff Masters | 0 | 1 | 1 | Oct 26, 1978 | H2H |
| Pat Dupre | 0 | 1 | 1 | Nov 2, 1977 | H2H |
| Sachio Kato | 0 | 1 | 1 | Oct 15, 1974 | — |
H2H data updated: 2026-09-04 00:00 UTC
Takao Yamamoto vs Geoff Masters H2H: 0-1
Geoff Masters holds a 1–0 lead over Takao Yamamoto in their ATP head-to-head. Across 1 main-draw meeting, Geoff Masters leads 1–0 on clay. Most recently, Geoff Masters won the 1978 Japan Open round of 32 6-4 6-2.
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 |
|---|---|---|---|---|---|---|---|---|
| Geoff Masters | 6-4 6-2 | Takao Yamamoto | Match data | Oct 26, 1978* | R32 | Japan Open | 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Takao Yamamoto | — | — | — | 1,516 | 1 | 6 | 14.3% | 0 | 0 | 0 | 0 | 0 | 0 |
| Geoff Masters | #826 | #42 | 0 | 1,889 | 237 | 253 | 48.4% | 0 | 0 | 0 | 0 | 2 | 2 |
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.
| Takao Yamamoto | Geoff Masters | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Yr | W-L | Win % | Rank | Elo | GS | Titles | Yr | W-L | Win % | Rank | Elo | GS | Titles |
| 1973 | 1–1 | 50.0% | — | 1,510 | 0 | 0 | 1968 | 2–2 | 50.0% | — | 1,511 | 0 | 0 |
| 1974 | 0–1 | 0.0% | — | 1,493 | 0 | 0 | 1969 | 7–6 | 53.8% | — | 1,542 | 0 | 0 |
| 1977 | 0–1 | 0.0% | — | 1,477 | 0 | 0 | 1970 | 10–7 | 58.8% | — | 1,581 | 0 | 0 |
| 1978 | 0–1 | 0.0% | — | 1,469 | 0 | 0 | 1971 | 19–22 | 46.3% | — | 1,573 | 0 | 0 |
| 1979 | 0–1 | 0.0% | — | 1,462 | 0 | 0 | 1972 | 18–18 | 50.0% | — | 1,670 | 0 | 0 |
| 1981 | 0–1 | 0.0% | — | 1,459 | 0 | 0 | 1973 | 28–23 | 54.9% | #52 | 1,756 | 0 | 0 |
| — | — | — | — | — | — | — | 1974 | 23–21 | 52.3% | #53 | 1,766 | 0 | 1 |
| — | — | — | — | — | — | — | 1975 | 27–24 | 52.9% | #44 | 1,812 | 0 | 1 |
| — | — | — | — | — | — | — | 1976 | 27–31 | 46.6% | #53 | 1,780 | 0 | 2 |
| — | — | — | — | — | — | — | 1977 | 22–27 | 44.9% | #83 | 1,662 | 0 | 2 |
| — | — | — | — | — | — | — | 1978 | 20–20 | 50.0% | #59 | 1,701 | 0 | 2 |
| — | — | — | — | — | — | — | 1979 | 21–23 | 47.7% | #62 | 1,728 | 0 | 2 |
| — | — | — | — | — | — | — | 1980 | 13–28 | 31.7% | #166 | 1,517 | 0 | 2 |
| — | — | — | — | — | — | — | 1981 | 0–1 | 0.0% | — | 1,501 | 0 | 2 |
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.
| Takao Yamamoto | Geoff Masters | ||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Yr | Hard | Clay | Grass | Carpet | Yr | Hard | Clay | Grass | Carpet | ||||||||||||||||||||||||
| W | L | M | Win % | W | L | M | Win % | W | L | M | Win % | W | L | M | Win % | W | L | M | Win % | W | L | M | Win % | W | L | M | Win % | W | L | M | Win % | ||
| 1973 | — | — | — | — | — | — | — | — | 1 | 1 | 2 | 50.0% | — | — | — | — | 1968 | — | — | — | — | — | — | — | — | 2 | 2 | 4 | 50.0% | — | — | — | — |
| 1974 | 0 | 1 | 1 | 0.0% | — | — | — | — | — | — | — | — | — | — | — | — | 1969 | — | — | — | — | 3 | 3 | 6 | 50.0% | 4 | 3 | 7 | 57.1% | — | — | — | — |
| 1977 | — | — | — | — | 0 | 1 | 1 | 0.0% | — | — | — | — | — | — | — | — | 1970 | — | — | — | — | 4 | 3 | 7 | 57.1% | 6 | 4 | 10 | 60.0% | — | — | — | — |
| 1978 | — | — | — | — | 0 | 1 | 1 | 0.0% | — | — | — | — | — | — | — | — | 1971 | 3 | 9 | 12 | 25.0% | 5 | 6 | 11 | 45.5% | 11 | 7 | 18 | 61.1% | — | — | — | — |
| 1979 | — | — | — | — | 0 | 1 | 1 | 0.0% | — | — | — | — | — | — | — | — | 1972 | 11 | 5 | 16 | 68.8% | 5 | 5 | 10 | 50.0% | 2 | 7 | 9 | 22.2% | 0 | 1 | 1 | 0.0% |
| 1981 | — | — | — | — | 0 | 1 | 1 | 0.0% | — | — | — | — | — | — | — | — | 1973 | 8 | 4 | 12 | 66.7% | 15 | 13 | 28 | 53.6% | 5 | 6 | 11 | 45.5% | — | — | — | — |
| — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1974 | 2 | 8 | 10 | 20.0% | 11 | 5 | 16 | 68.8% | 9 | 4 | 13 | 69.2% | 1 | 4 | 5 | 20.0% |
| — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1975 | 9 | 9 | 18 | 50.0% | 5 | 6 | 11 | 45.5% | 6 | 3 | 9 | 66.7% | 7 | 6 | 13 | 53.8% |
| — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1976 | 11 | 6 | 17 | 64.7% | 6 | 9 | 15 | 40.0% | 3 | 5 | 8 | 37.5% | 7 | 11 | 18 | 38.9% |
| — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1977 | 15 | 11 | 26 | 57.7% | 0 | 2 | 2 | 0.0% | 5 | 9 | 14 | 35.7% | 2 | 5 | 7 | 28.6% |
| — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1978 | 7 | 5 | 12 | 58.3% | 3 | 2 | 5 | 60.0% | 4 | 4 | 8 | 50.0% | 6 | 9 | 15 | 40.0% |
| — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1979 | 2 | 4 | 6 | 33.3% | 4 | 3 | 7 | 57.1% | 9 | 6 | 15 | 60.0% | 6 | 10 | 16 | 37.5% |
| — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1980 | 2 | 6 | 8 | 25.0% | 2 | 7 | 9 | 22.2% | 1 | 6 | 7 | 14.3% | 8 | 9 | 17 | 47.1% |
| — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1981 | — | — | — | — | — | — | — | — | 0 | 1 | 1 | 0.0% | — | — | — | — |
| Career | 0 | 1 | 1 | 0.0% | 0 | 4 | 4 | 0.0% | 1 | 1 | 2 | 50.0% | — | — | — | — | Career | 70 | 67 | 137 | 51.1% | 63 | 64 | 127 | 49.6% | 67 | 67 | 134 | 50.0% | 37 | 55 | 92 | 40.2% |
Advanced Statistics Comparison by Career Season
Rows are aligned in career order because complete birth data is unavailable. Metrics are precomputed from eligible main-draw results; point-stat values use the available detailed sample. 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.
| Takao Yamamoto | Geoff Masters | ||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 |
| 1973 | 1511 | 98.9 | — | — | — | — | — | — | — | 50.0% | -1.00 | — | — | — | -0.12 | 1968 | 1511 | 104.2 | — | — | — | — | — | — | +30 | 54.5% | +0.45 | — | — | — | +0.07 |
| 1974 | 1494 | 98.0 | — | — | — | — | — | — | — | 0.0% | -2.50 | — | — | — | +0.21 | 1969 | 1542 | 108.7 | — | — | — | — | — | +20 | -1 | 53.1% | +0.47 | 2–1 (67%) | — | — | +1.09 |
| 1977 | 1477 | 97.3 | — | — | — | — | — | — | — | 33.3% | -1.33 | 0–1 | 1–0 | — | +0.23 | 1970 | 1581 | 113.8 | — | — | — | — | — | +4 | +1 | 48.9% | +0.09 | 2–0 | 0–1 | — | +2.04 |
| 1978 | 1470 | 100.1 | — | — | — | — | — | — | — | 0.0% | -3.00 | — | — | — | -0.03 | 1971 | 1573 | 113.6 | — | — | — | — | -110 | +36 | +80 | 44.4% | -0.32 | 9–3 (75%) | 1–3 (25%) | 105.9 | +2.45 |
| 1979 | 1463 | 97.6 | — | — | — | — | — | — | — | 0.0% | -3.50 | — | — | — | -0.05 | 1972 | 1670 | 122.7 | — | — | — | — | -2 | -18 | -123 | 48.0% | +0.02 | 6–6 (50%) | 3–4 (43%) | 100.9 | +1.43 |
| 1981 | 1459 | 107.0 | — | — | — | — | — | — | — | 0.0% | -3.00 | — | — | — | -0.15 | 1973 | 1756 | 140.1 | — | — | — | — | 0 | -38 | -146 | 52.2% | +0.18 | 11–7 (61%) | 8–9 (47%) | 106.0 | -1.32 |
| — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1974 | 1766 | 141.0 | — | — | — | — | -125 | +49 | -11 | 52.2% | +0.31 | 8–7 (53%) | 3–6 (33%) | 99.2 | -2.52 |
| — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1975 | 1812 | 148.9 | — | — | — | — | -23 | -36 | +8 | 53.0% | +0.27 | 10–12 (45%) | 6–8 (43%) | 96.5 | -3.09 |
| — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1976 | 1781 | 148.0 | — | — | — | — | +86 | -91 | -12 | 48.5% | +0.04 | 4–8 (33%) | 9–4 (69%) | 99.7 | -2.30 |
| — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1977 | 1662 | 120.4 | — | — | — | — | +90 | — | -42 | 44.1% | -0.40 | 8–10 (44%) | 6–9 (40%) | 95.2 | +2.97 |
| — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1978 | 1701 | 140.0 | — | — | — | — | +47 | -24 | -35 | 51.0% | +0.09 | 5–8 (38%) | 5–5 (50%) | 95.9 | +1.79 |
| — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1979 | 1729 | 143.8 | — | — | — | — | -31 | -3 | -1 | 48.1% | -0.11 | 8–8 (50%) | 8–7 (53%) | 102.7 | -2.12 |
| — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1980 | 1518 | 124.9 | — | — | — | — | +79 | +146 | +101 | 36.6% | -0.87 | 4–8 (33%) | 8–8 (50%) | 94.8 | -0.05 |
| — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1981 | 1501 | 94.8 | — | — | — | — | — | — | — | 0.0% | -4.00 | — | — | — | +0.19 |
| Career | 1516 | 99.5 | — | — | — | — | — | — | — | 20.0% | -2.13 | 0–1 | 1–0 | — | +1.29 | Career | 1890 | 139.6 | — | — | — | — | +20 | -4 | -11 | 48.2% | -0.04 | 77–78 (50%) | 57–64 (47%) | 99.9 | +0.13 |
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.
Geoff Masters
all rivalries →| Opponent | W | L | M | Last Played | H2H |
|---|---|---|---|---|---|
| Roscoe Tanner | 0 | 9 | 9 | Nov 15, 1979 | H2H |
| Kim Warwick | 5 | 4 | 9 | Oct 27, 1978 | H2H |
| Jimmy Connors | 0 | 8 | 8 | Feb 14, 1980 | H2H |
| Ken Rosewall | 2 | 6 | 8 | Oct 27, 1978 | H2H |
| Bob Lutz | 2 | 6 | 8 | Feb 15, 1978 | H2H |