H2H data updated: 2026-07-17 14:15 UTC
Jan Siemerink vs Daniel Vacek H2H: 1-4
Daniel Vacek holds a 4–1 lead over Jan Siemerink in their ATP head-to-head. Across 5 main-draw meetings, they are tied 1–1 on carpet, while Daniel Vacek leads 2–0 on hard courts. Most recently, Daniel Vacek won the 1998 Long Island fourth round 6-1 4-6 6-3.
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NED
Age 56
Left-Handed
183 cm / 6'0"
H2H
1
–
4
5 main draw meetings
CZE
Age 55
Right-Handed
190 cm / 6'3"
H2H Match Log
| Date | Tournament | Category | Round | Surface | Winner | Score | Loser | Match |
|---|---|---|---|---|---|---|---|---|
| Aug 28, 1998* | Long Island | ATP 250 | R16 | Hard | Daniel Vacek | 6-1 4-6 6-3 | Jan Siemerink | Match data |
| Aug 15, 1998* | Cincinnati Masters | Masters 1000 | R16 | Hard | Daniel Vacek | 6-1 6-4 | Jan Siemerink | Match data |
| Mar 6, 1997* | Rotterdam | ATP 250 | R32 | Carpet | Daniel Vacek | 7-6(3) 7-6(2) | Jan Siemerink | Match data |
| May 11, 1995* | Hamburg Masters | Masters 1000 | R32 | Clay | Daniel Vacek | 4-1 (ret.) | Jan Siemerink | Match data |
| Feb 25, 1993* | Rotterdam | ATP 250 | R32 | Carpet | Jan Siemerink | 6-4 6-7(4) 6-1 | Daniel Vacek | 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Jan Siemerink | #987 | #14 | 1,863 | 1,908 | 261 | 260 | 50.1% | 0 | 0 | 0 | 0 | 4 | 4 |
| Daniel Vacek | #1,133 | #26 | 1,151 | 1,818 | 170 | 219 | 43.7% | 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.
| Age | Jan Siemerink | Daniel Vacek | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Yr | W-L | Win % | Rank | Elo | GS | Titles | Yr | W-L | Win % | Rank | Elo | GS | Titles | |
| 20 | 1990 | 5–4 | 55.6% | #135 | 1,541 | 0 | 0 | 1991 | 1–3 | 25.0% | #470 | 1,490 | 0 | 0 |
| 21 | 1991 | 30–21 | 58.8% | #26 | 1,756 | 0 | 1 | — | — | — | — | — | — | — |
| 22 | 1992 | 22–26 | 45.8% | #57 | 1,747 | 0 | 1 | 1993 | 13–22 | 37.1% | #114 | 1,560 | 0 | 0 |
| 23 | 1993 | 24–25 | 49.0% | #53 | 1,670 | 0 | 1 | 1994 | 25–27 | 48.1% | #45 | 1,711 | 0 | 0 |
| 24 | 1994 | 16–19 | 45.7% | #81 | 1,685 | 0 | 1 | 1995 | 30–31 | 49.2% | #27 | 1,794 | 0 | 0 |
| 25 | 1995 | 37–29 | 56.1% | #21 | 1,784 | 0 | 1 | 1996 | 22–28 | 44.0% | #71 | 1,694 | 0 | 0 |
| 26 | 1996 | 35–27 | 56.5% | #15 | 1,866 | 0 | 2 | 1997 | 19–26 | 42.2% | #53 | 1,669 | 0 | 0 |
| 27 | 1997 | 18–27 | 40.0% | #78 | 1,738 | 0 | 2 | 1998 | 25–29 | 46.3% | #50 | 1,672 | 0 | 0 |
| 28 | 1998 | 38–24 | 61.3% | #19 | 1,809 | 0 | 4 | 1999 | 29–31 | 48.3% | #43 | 1,744 | 0 | 0 |
| 29 | 1999 | 17–25 | 40.5% | #88 | 1,665 | 0 | 4 | 2000 | 4–13 | 23.5% | #238 | 1,630 | 0 | 0 |
| 30 | 2000 | 7–14 | 33.3% | #104 | 1,576 | 0 | 4 | 2001 | 2–7 | 22.2% | #393 | 1,595 | 0 | 0 |
| 31 | 2001 | 12–17 | 41.4% | #127 | 1,564 | 0 | 4 | 2002 | 0–2 | 0.0% | #749 | 1,578 | 0 | 0 |
| 32 | 2002 | 0–2 | 0.0% | #438 | 1,532 | 0 | 4 | — | — | — | — | — | — | — |