Danai Udomchoke
all rivalries →| Opponent | W | L | M | Last Played | H2H |
|---|---|---|---|---|---|
| Dmitry Tursunov | 0 | 4 | 4 | Jul 19, 2007 | H2H |
| Robby Ginepri | 0 | 3 | 3 | Oct 1, 2009 | H2H |
| Jarkko Nieminen | 0 | 2 | 2 | Sep 30, 2010 | H2H |
| Jesse Levine | 0 | 2 | 2 | Jul 22, 2009 | H2H |
| Sam Querrey | 0 | 2 | 2 | Jun 24, 2009 | H2H |
H2H data updated: 2026-09-03 00:00 UTC
Danai Udomchoke vs Jan Vacek
Compare the head-to-head record, career totals, season-by-season performance, and match log for Danai Udomchoke vs Jan Vacek.
Want to explore more matchups? Advanced rivalry search lets you browse current and historical rivalries, unbeaten records, or every matchup for a player.
H2H
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0 main draw meetings
H2H Match Log
| Player | Score | Player | Match Data | Date | Round | Tournament | Category | Surface |
|---|---|---|---|---|---|---|---|---|
| Danai Udomchoke | 6-4 7-5 | Jan Vacek | Match data | Aug 31, 2004* | Q3 | US Open | Grand Slam | Hard |
| Danai Udomchoke | 6-4 6-3 | Jan Vacek | Match data | Aug 28, 2000 | Q1 | US Open | Grand Slam | Hard |
2 qualifying meetings shown in the table; qualifying is excluded from the H2H score. 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Danai Udomchoke | #1,207 | #77 | 646 | 1,631 | 18 | 52 | 25.7% | 0 | 0 | 0 | 0 | 0 | 0 |
| Jan Vacek | #1,155 | #61 | 646 | 1,640 | 30 | 59 | 33.7% | 0 | 0 | 0 | 0 | 1 | 1 |
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.
| Age | Danai Udomchoke | Jan Vacek | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Yr | W-L | Win % | Rank | Elo | GS | Titles | Yr | W-L | Win % | Rank | Elo | GS | Titles | |
| 19 | 2001 | 2–1 | 66.7% | #283 | 1,509 | 0 | 0 | — | — | — | — | — | — | — |
| 20 | 2002 | 0–1 | 0.0% | #211 | 1,489 | 0 | 0 | — | — | — | — | — | — | — |
| 21 | 2003 | 0–1 | 0.0% | #162 | 1,437 | 0 | 0 | — | — | — | — | — | — | — |
| 22 | 2004 | 0–3 | 0.0% | #204 | 1,488 | 0 | 0 | — | — | — | — | — | — | — |
| 23 | 2005 | 2–4 | 33.3% | #121 | 1,562 | 0 | 0 | — | — | — | — | — | — | — |
| 24 | 2006 | 6–12 | 33.3% | #104 | 1,563 | 0 | 0 | — | — | — | — | — | — | — |
| 25 | 2007 | 7–19 | 26.9% | #154 | 1,498 | 0 | 0 | 2001 | 8–6 | 57.1% | #75 | 1,630 | 0 | 1 |
| 26 | 2008 | 0–2 | 0.0% | #152 | 1,525 | 0 | 0 | 2002 | 10–24 | 29.4% | #110 | 1,552 | 0 | 1 |
| 27 | 2009 | 0–5 | 0.0% | #162 | 1,501 | 0 | 0 | 2003 | 5–13 | 27.8% | #129 | 1,566 | 0 | 1 |
| 28 | 2010 | 0–1 | 0.0% | #457 | 1,480 | 0 | 0 | 2004 | 3–12 | 20.0% | #176 | 1,480 | 0 | 1 |
| 29 | 2011 | 1–1 | 50.0% | #210 | 1,507 | 0 | 0 | 2005 | 1–1 | 50.0% | #260 | 1,463 | 0 | 1 |
| 30 | 2012 | 0–2 | 0.0% | #149 | 1,523 | 0 | 0 | 2006 | 1–1 | 50.0% | #298 | 1,489 | 0 | 1 |
| 31 | — | — | — | — | — | — | — | 2007 | 1–1 | 50.0% | #235 | 1,553 | 0 | 1 |
| 32 | — | — | — | — | — | — | — | 2008 | 1–1 | 50.0% | #563 | 1,593 | 0 | 1 |
Surface Results by Age
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 | Danai Udomchoke | Jan Vacek | ||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 % | |||
| 19 | 2001 | 2 | 1 | 3 | 66.7% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 20 | 2002 | 0 | 1 | 1 | 0.0% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 21 | 2003 | 0 | 1 | 1 | 0.0% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 22 | 2004 | 0 | 3 | 3 | 0.0% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 23 | 2005 | 1 | 3 | 4 | 25.0% | — | — | — | — | 1 | 1 | 2 | 50.0% | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 24 | 2006 | 5 | 8 | 13 | 38.5% | — | — | — | — | 1 | 4 | 5 | 20.0% | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 25 | 2007 | 4 | 11 | 15 | 26.7% | 0 | 4 | 4 | 0.0% | 3 | 4 | 7 | 42.9% | 2001 | 7 | 2 | 9 | 77.8% | 1 | 2 | 3 | 33.3% | 0 | 2 | 2 | 0.0% |
| 26 | 2008 | 0 | 2 | 2 | 0.0% | — | — | — | — | — | — | — | — | 2002 | 3 | 14 | 17 | 17.6% | 2 | 7 | 9 | 22.2% | 5 | 3 | 8 | 62.5% |
| 27 | 2009 | 0 | 3 | 3 | 0.0% | — | — | — | — | 0 | 2 | 2 | 0.0% | 2003 | 1 | 11 | 12 | 8.3% | — | — | — | — | 4 | 2 | 6 | 66.7% |
| 28 | 2010 | 0 | 1 | 1 | 0.0% | — | — | — | — | — | — | — | — | 2004 | 1 | 6 | 7 | 14.3% | 1 | 2 | 3 | 33.3% | 1 | 4 | 5 | 20.0% |
| 29 | 2011 | 1 | 1 | 2 | 50.0% | — | — | — | — | — | — | — | — | 2005 | — | — | — | — | — | — | — | — | 1 | 1 | 2 | 50.0% |
| 30 | 2012 | 0 | 2 | 2 | 0.0% | — | — | — | — | — | — | — | — | 2006 | — | — | — | — | — | — | — | — | 1 | 1 | 2 | 50.0% |
| 31 | — | — | — | — | — | — | — | — | — | — | — | — | — | 2007 | — | — | — | — | — | — | — | — | 1 | 1 | 2 | 50.0% |
| 32 | — | — | — | — | — | — | — | — | — | — | — | — | — | 2008 | — | — | — | — | — | — | — | — | 1 | 1 | 2 | 50.0% |
| Career | — | 13 | 37 | 50 | 26.0% | 0 | 4 | 4 | 0.0% | 5 | 11 | 16 | 31.2% | — | 12 | 33 | 45 | 26.7% | 4 | 11 | 15 | 26.7% | 14 | 15 | 29 | 48.3% |
Performance Progression by Age
Seasons are aligned by the age each player spent most of that calendar year. Detailed serve and return statistics available for 69/69 of Danai Udomchoke's and 83/89 of Jan Vacek's main draw matches. Sample is shown as matches with detailed serve and return statistics / total main draw matches. Bold green marks the stronger value when both stat samples contain at least 5 matches; lower is better for DFs/M.
| Age | Danai Udomchoke | Jan Vacek | ||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Yr | Sample | Aces/M | DFs/M | 1st Sv% | 1st Pts% | 2nd Pts% | BP Saved% | BP Conv% | Svc Pts% | Ret Pts% | Yr | Sample | Aces/M | DFs/M | 1st Sv% | 1st Pts% | 2nd Pts% | BP Saved% | BP Conv% | Svc Pts% | Ret Pts% | |
| 19 | 2001 | 3/3 | 3.3 | 2.3 | 60.2% | 71.8% | 45.1% | 57.4% | 41.1% | 61.0% | 36.5% | — | —/— | — | — | — | — | — | — | — | — | — |
| 21 | 2003 | 1/1 | 2.0 | 2.0 | 56.6% | 50.0% | 39.1% | 58.3% | 50.0% | 45.3% | 34.0% | — | —/— | — | — | — | — | — | — | — | — | — |
| 22 | 2004 | 3/3 | 1.3 | 3.7 | 62.5% | 59.7% | 47.9% | 49.9% | 31.5% | 54.9% | 37.9% | — | —/— | — | — | — | — | — | — | — | — | — |
| 23 | 2005 | 6/6 | 2.7 | 4.3 | 58.4% | 65.1% | 50.3% | 58.0% | 48.6% | 58.3% | 36.2% | — | —/— | — | — | — | — | — | — | — | — | — |
| 24 | 2006 | 18/18 | 4.3 | 3.5 | 63.0% | 69.5% | 42.7% | 62.0% | 29.5% | 60.0% | 35.9% | — | —/— | — | — | — | — | — | — | — | — | — |
| 25 | 2007 | 26/26 | 3.3 | 3.8 | 59.9% | 67.8% | 47.9% | 49.2% | 39.3% | 59.6% | 35.4% | 2001 | 13/14 | 3.6 | 3.5 | 58.9% | 67.7% | 50.3% | 45.4% | 45.8% | 60.6% | 38.8% |
| 26 | 2008 | 2/2 | 5.5 | 7.0 | 66.4% | 56.0% | 37.9% | 49.4% | 45.0% | 49.9% | 34.3% | 2002 | 29/34 | 5.6 | 3.6 | 56.5% | 70.3% | 48.6% | 54.8% | 36.3% | 61.1% | 34.1% |
| 27 | 2009 | 5/5 | 3.4 | 3.0 | 61.2% | 67.1% | 42.4% | 62.1% | 40.0% | 57.5% | 30.2% | 2003 | 18/18 | 3.6 | 2.9 | 56.2% | 68.5% | 47.4% | 53.2% | 35.6% | 59.4% | 34.4% |
| 28 | 2010 | 1/1 | 0.0 | 2.0 | 65.4% | 64.7% | 38.9% | 57.1% | 0.0% | 55.8% | 27.5% | 2004 | 15/15 | 4.5 | 3.4 | 57.9% | 67.7% | 47.4% | 50.9% | 36.3% | 58.9% | 31.2% |
| 29 | 2011 | 2/2 | 2.0 | 3.0 | 64.4% | 64.0% | 45.6% | 52.3% | 56.3% | 57.7% | 40.5% | 2005 | 2/2 | 4.5 | 2.5 | 68.4% | 66.3% | 50.0% | 75.0% | 51.3% | 62.1% | 48.8% |
| 30 | 2012 | 2/2 | 4.5 | 3.5 | 63.3% | 60.0% | 44.8% | 43.4% | 47.7% | 54.5% | 33.5% | 2006 | 2/2 | 5.0 | 3.5 | 58.9% | 69.4% | 58.0% | 68.3% | 64.3% | 64.7% | 34.6% |
| 31 | — | —/— | — | — | — | — | — | — | — | — | — | 2007 | 2/2 | 5.0 | 1.5 | 67.0% | 66.4% | 43.6% | 60.7% | 25.0% | 58.9% | 33.3% |
| 32 | — | —/— | — | — | — | — | — | — | — | — | — | 2008 | 2/2 | 2.5 | 3.5 | 58.4% | 74.4% | 50.9% | 35.7% | 75.0% | 64.5% | 29.5% |
| Career | — | 69/70 | 3.4 | 3.6 | 61.2% | 66.8% | 45.5% | 54.8% | 37.8% | 58.5% | 35.3% | — | 83/89 | 4.5 | 3.3 | 57.7% | 68.9% | 48.6% | 52.8% | 39.3% | 60.4% | 34.6% |
Advanced Statistics Comparison by Age
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 | Danai Udomchoke | Jan Vacek | ||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 | 2000 | 1511 | 104.2 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 19 | 2001 | 1509 | 104.7 | -0.29 | -0.14 | 0.936 | 49.8% | +18 | — | — | 57.1% | +0.86 | 1–0 | — | — | +0.29 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 20 | 2002 | 1489 | 101.7 | — | — | — | — | — | — | — | 33.3% | -2.33 | 0–1 | 1–0 | — | +0.07 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 21 | 2003 | 1438 | 91.4 | +0.50 | -1.38 | 0.622 | 40.0% | — | — | — | 0.0% | -3.50 | — | — | — | -0.10 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 22 | 2004 | 1489 | 108.9 | -1.95 | -0.64 | 0.840 | 46.7% | +25 | — | — | 12.5% | -1.63 | 0–1 | — | — | -0.11 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 23 | 2005 | 1563 | 118.8 | -1.66 | -0.22 | 0.869 | 47.6% | -47 | — | — | 36.8% | -0.89 | 2–1 (67%) | 1–2 (33%) | — | -0.36 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 24 | 2006 | 1564 | 116.2 | -2.69 | -0.23 | 0.899 | 48.1% | +6 | — | +5 | 31.7% | -1.10 | 2–2 (50%) | 2–4 (33%) | — | -0.02 | 2000 | 1484 | 97.9 | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 25 | 2007 | 1499 | 113.6 | -3.16 | -1.20 | 0.876 | 47.4% | +15 | -71 | +50 | 37.5% | -0.94 | 2–8 (20%) | 6–4 (60%) | — | +0.93 | 2001 | 1630 | 116.6 | -0.42 | -0.21 | 0.985 | 49.3% | +23 | -115 | — | 48.7% | -0.31 | 6–1 (86%) | 6–3 (67%) | — | +0.77 |
| 26 | 2008 | 1525 | 106.5 | -3.90 | -1.95 | 0.684 | 42.5% | — | — | — | 33.3% | -2.67 | 0–2 | 1–0 | — | +0.02 | 2002 | 1553 | 117.1 | -1.69 | -2.23 | 0.877 | 47.9% | -35 | -78 | +72 | 34.1% | -0.94 | 3–9 (25%) | 5–3 (63%) | — | -0.04 |
| 27 | 2009 | 1501 | 108.8 | -2.60 | -1.67 | 0.711 | 44.3% | +41 | — | — | 0.0% | -2.64 | — | 0–2 | — | +0.11 | 2003 | 1566 | 124.4 | -2.06 | -1.73 | 0.846 | 46.9% | -78 | — | +148 | 33.3% | -1.09 | 2–4 (33%) | 1–2 (33%) | — | -1.22 |
| 28 | 2010 | 1480 | 100.3 | -0.48 | +0.05 | 0.621 | 41.7% | — | — | — | 0.0% | -3.50 | — | — | — | -0.02 | 2004 | 1480 | 108.1 | -2.52 | -3.37 | 0.758 | 45.6% | +9 | +2 | +122 | 23.7% | -1.55 | 1–1 | 0–4 (0%) | — | +0.51 |
| 29 | 2011 | 1508 | 106.0 | -0.56 | -1.62 | 0.959 | 49.1% | — | — | — | 40.0% | -0.20 | 1–0 | 0–1 | — | +0.21 | 2005 | 1463 | 101.9 | -0.51 | +0.49 | 1.286 | 55.2% | — | — | — | 50.0% | +1.75 | — | 0–2 | — | +0.11 |
| 30 | 2012 | 1523 | 106.3 | +0.44 | -2.27 | 0.738 | 45.0% | — | — | — | 28.6% | -1.71 | 0–1 | 1–0 | — | -0.04 | 2006 | 1490 | 103.0 | -0.56 | -0.98 | 0.981 | 49.8% | — | — | — | 50.0% | -0.17 | 1–1 | 1–1 | — | -0.08 |
| 31 | 2013 | 1519 | 97.2 | — | — | — | — | — | — | — | — | — | — | — | — | — | 2007 | 1554 | 115.4 | +0.01 | -0.65 | 0.809 | 46.6% | — | — | — | 50.0% | -1.00 | — | 1–0 | — | -0.15 |
| 32 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2008 | 1593 | 119.8 | +1.96 | +2.19 | 0.832 | 48.1% | — | — | — | 40.0% | -0.20 | 1–0 | — | — | -0.03 |
| 33 | 2015 | 1501 | 96.5 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Career | — | 1631 | 112.5 | -2.44 | -0.87 | 0.852 | 47.1% | +9 | -71 | +31 | 32.2% | -1.18 | 8–16 (33%) | 12–13 (48%) | 96.6 | +1.40 | — | 1640 | 120.6 | -1.54 | -1.77 | 0.874 | 47.7% | -28 | -69 | +109 | 35.8% | -0.88 | 14–16 (47%) | 14–15 (48%) | 101.6 | -0.15 |
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.
Jan Vacek
all rivalries →| Opponent | W | L | M | Last Played | H2H |
|---|---|---|---|---|---|
| Paradorn Srichaphan | 0 | 3 | 3 | Jun 17, 2005 | H2H |
| Sjeng Schalken | 0 | 3 | 3 | Jul 3, 2002 | H2H |
| Flavio Saretta | 1 | 1 | 2 | Oct 6, 2004 | H2H |
| Antony Dupuis | 1 | 1 | 2 | Jul 8, 2004 | H2H |
| Juan Carlos Ferrero | 0 | 2 | 2 | Apr 16, 2004 | H2H |