H2H data updated: 2026-09-06 00:00 UTC
Jan-Michael Gambill holds a 1–0 lead over Kotaro Miyachi in their ATP head-to-head. Across 1 main-draw meeting, Jan-Michael Gambill leads 1–0 on hard courts. Most recently, Jan-Michael Gambill won the 1998 Japan Open round of 32 6-0 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.
| Player | Score | Player | Match Data | Date | Round | Tournament | Category | Surface |
|---|---|---|---|---|---|---|---|---|
| Jan-Michael Gambill | 6-0 6-3 | Kotaro Miyachi | Match data | Apr 16, 1998* | R32 | Japan Open | ATP Championship Series → modern equivalent ATP 500 | Hard |
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.
| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Jan-Michael Gambill | #1,352 | #14 | 1,655 | 1,949 | 201 | 191 | 51.3% | 0 | 0 | 0 | 0 | 3 | 3 |
| Kotaro Miyachi | #1,345 | #303 | 118 | 1,535 | 4 | 4 | 50.0% | 0 | 0 | 0 | 0 | 0 | 0 |
Seasons are aligned by the age each player spent most of that calendar year. GS and Titles are cumulative career totals through that season.
| Age | Jan-Michael Gambill | Kotaro Miyachi | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Yr | W-L | Win % | Rank | Elo | GS | Titles | Yr | W-L | Win % | Rank | Elo | GS | Titles | |
| 18 | 1995 | 0–1 | 0.0% | — | 1,487 | 0 | 0 | — | — | — | — | — | — | — |
| 20 | 1997 | 3–5 | 37.5% | #186 | 1,520 | 0 | 0 | — | — | — | — | — | — | — |
| 21 | 1998 | 31–23 | 57.4% | #38 | 1,754 | 0 | 0 | 1995 | 2–2 | 50.0% | #512 | 1,505 | 0 | 0 |
| 22 | 1999 | 25–25 | 50.0% | #58 | 1,762 | 0 | 1 | 1996 | 1–1 | 50.0% | #436 | 1,517 | 0 | 0 |
| 23 | 2000 | 33–26 | 55.9% | #33 | 1,818 | 0 | 1 | — | — | — | — | — | — | — |
| 24 | 2001 | 35–22 | 61.4% | #21 | 1,759 | 0 | 2 | 1998 | 1–1 | 50.0% | #362 | 1,522 | 0 | 0 |
| 25 | 2002 | 28–26 | 51.9% | #42 | 1,756 | 0 | 2 | — | — | — | — | — | — | — |
| 26 | 2003 | 22–25 | 46.8% | #51 | 1,643 | 0 | 3 | — | — | — | — | — | — | — |
| 27 | 2004 | 18–25 | 41.9% | #95 | 1,595 | 0 | 3 | — | — | — | — | — | — | — |
| 28 | 2005 | 5–10 | 33.3% | #191 | 1,558 | 0 | 3 | — | — | — | — | — | — | — |
| 29 | 2006 | 1–1 | 50.0% | #687 | 1,568 | 0 | 3 | — | — | — | — | — | — | — |
| 30 | 2007 | 0–2 | 0.0% | #1107 | 1,504 | 0 | 3 | — | — | — | — | — | — | — |
Seasons are aligned by the age each player spent most of that calendar year. 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.
| Age | Jan-Michael Gambill | Kotaro Miyachi | ||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 % | |||
| 18 | 1995 | 0 | 1 | 1 | 0.0% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 20 | 1997 | 3 | 4 | 7 | 42.9% | 0 | 1 | 1 | 0.0% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 21 | 1998 | 23 | 13 | 36 | 63.9% | 3 | 4 | 7 | 42.9% | 2 | 3 | 5 | 40.0% | 3 | 3 | 6 | 50.0% | 1995 | 2 | 1 | 3 | 66.7% | — | — | — | — | — | — | — | — | 0 | 1 | 1 | 0.0% |
| 22 | 1999 | 20 | 15 | 35 | 57.1% | 1 | 5 | 6 | 16.7% | 3 | 3 | 6 | 50.0% | 1 | 2 | 3 | 33.3% | 1996 | 1 | 1 | 2 | 50.0% | — | — | — | — | — | — | — | — | — | — | — | — |
| 23 | 2000 | 20 | 17 | 37 | 54.1% | 3 | 4 | 7 | 42.9% | 8 | 3 | 11 | 72.7% | 2 | 2 | 4 | 50.0% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 24 | 2001 | 29 | 13 | 42 | 69.0% | 2 | 4 | 6 | 33.3% | 2 | 3 | 5 | 40.0% | 2 | 2 | 4 | 50.0% | 1998 | 1 | 1 | 2 | 50.0% | — | — | — | — | — | — | — | — | — | — | — | — |
| 25 | 2002 | 24 | 16 | 40 | 60.0% | 1 | 5 | 6 | 16.7% | 3 | 2 | 5 | 60.0% | 0 | 3 | 3 | 0.0% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 26 | 2003 | 20 | 17 | 37 | 54.1% | 0 | 5 | 5 | 0.0% | 2 | 3 | 5 | 40.0% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 27 | 2004 | 15 | 18 | 33 | 45.5% | 0 | 3 | 3 | 0.0% | 3 | 4 | 7 | 42.9% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 28 | 2005 | 5 | 10 | 15 | 33.3% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 29 | 2006 | 1 | 1 | 2 | 50.0% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 30 | 2007 | 0 | 1 | 1 | 0.0% | 0 | 1 | 1 | 0.0% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Career | — | 160 | 126 | 286 | 55.9% | 10 | 32 | 42 | 23.8% | 23 | 21 | 44 | 52.3% | 8 | 12 | 20 | 40.0% | — | 4 | 3 | 7 | 57.1% | — | — | — | — | — | — | — | — | 0 | 1 | 1 | 0.0% |
Seasons are aligned by the age each player spent most of that calendar year. 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.
| Age | Jan-Michael Gambill | Kotaro Miyachi | ||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 | |
| 18 | 1995 | 1487 | 99.7 | — | — | — | — | — | — | — | 0.0% | -3.00 | — | — | — | +0.04 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 20 | 1997 | 1520 | 116.3 | — | — | — | — | +18 | — | — | 33.3% | -1.17 | 1–0 | 3–1 (75%) | — | -0.59 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 21 | 1998 | 1755 | 144.7 | — | — | — | — | +27 | -222 | -139 | 53.4% | +0.32 | 13–4 (76%) | 11–12 (48%) | 111.1 | +0.72 | 1995 | 1505 | 99.1 | -3.13 | -0.28 | 0.826 | 46.1% | +29 | — | — | 44.4% | -0.67 | 1–0 | 1–0 | — | +0.59 |
| 22 | 1999 | 1763 | 145.0 | — | — | — | — | +37 | -263 | -154 | 51.2% | +0.26 | 8–11 (42%) | 10–9 (53%) | 102.4 | -2.53 | 1996 | 1517 | 101.4 | -4.19 | -0.53 | 0.724 | 43.0% | — | — | — | 40.0% | -2.20 | 1–0 | 1–0 | — | +0.03 |
| 23 | 2000 | 1819 | 143.8 | — | — | — | — | -27 | -296 | -44 | 56.3% | +0.60 | 10–10 (50%) | 10–17 (37%) | 96.8 | -1.79 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 24 | 2001 | 1759 | 150.9 | — | — | — | — | +67 | -256 | -39 | 61.9% | +0.81 | 8–6 (57%) | 11–10 (52%) | 99.4 | +0.99 | 1998 | 1523 | 103.7 | +0.50 | -1.50 | 1.696 | 62.0% | — | — | — | 50.0% | 0.00 | — | — | — | +0.18 |
| 25 | 2002 | 1756 | 148.6 | — | — | — | — | +48 | -275 | -49 | 51.9% | +0.44 | 11–10 (52%) | 11–14 (44%) | 92.3 | -0.54 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 26 | 2003 | 1644 | 133.1 | +0.95 | -1.36 | 0.983 | 50.0% | +72 | -213 | +27 | 48.2% | +0.07 | 5–6 (45%) | 9–9 (50%) | 96.5 | +1.55 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 27 | 2004 | 1596 | 125.6 | +0.40 | -1.44 | 0.961 | 49.5% | +33 | -178 | +70 | 44.1% | -0.30 | 3–7 (30%) | 13–11 (54%) | 98.0 | +1.48 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 28 | 2005 | 1559 | 116.9 | -1.32 | -3.12 | 0.876 | 47.9% | +9 | — | — | 33.3% | -0.92 | 2–2 (50%) | 4–3 (57%) | 101.5 | +0.61 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 29 | 2006 | 1569 | 105.0 | -1.55 | +1.41 | 0.916 | 48.6% | — | — | — | 40.0% | -0.60 | 1–0 | — | — | +0.02 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 30 | 2007 | 1505 | 103.5 | -0.27 | -2.33 | 0.719 | 44.4% | — | — | — | 0.0% | -1.75 | — | 0–1 | — | +0.01 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 31 | 2008 | 1506 | 100.9 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 33 | 2010 | 1508 | 103.1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Career | — | 1949 | 145.6 | +0.33 | -1.61 | 0.952 | 49.4% | +35 | -250 | -44 | 51.3% | +0.24 | 62–56 (53%) | 82–87 (49%) | 100.1 | -0.01 | — | 1535 | 101.7 | -2.88 | -0.57 | 0.904 | 47.7% | +29 | — | — | 44.4% | -0.95 | 2–0 | 2–0 | — | +10.00 |
Each player's five most-played main-draw opponents. The current matchup is highlighted when it appears in a player's top five.
| Opponent | W | L | M | Last Played | H2H |
|---|---|---|---|---|---|
| Andre Agassi | 2 | 11 | 13 | Feb 14, 2004 | H2H |
| Sjeng Schalken | 6 | 3 | 9 | Oct 16, 2003 | H2H |
| Justin Gimelstob | 4 | 4 | 8 | Jan 6, 2005 | H2H |
| Tim Henman | 3 | 4 | 7 | Aug 4, 2006 | H2H |
| Michael Chang | 4 | 3 | 7 | Jul 25, 2002 | H2H |
| Opponent | W | L | M | Last Played | H2H |
|---|---|---|---|---|---|
| Jan-Michael Gambill | 0 | 1 | 1 | Apr 16, 1998 | H2H |
| Allen Belobrajdic | 1 | 0 | 1 | Apr 15, 1998 | H2H |
| Guy Forget | 0 | 1 | 1 | Apr 18, 1996 | H2H |
| Jerome Golmard | 1 | 0 | 1 | Apr 17, 1996 | H2H |
| Leander Paes | 0 | 1 | 1 | Oct 11, 1995 | H2H |