H2H data updated: 2026-09-01 00:00 UTC

Michael Chang vs Daniel Vacek H2H: 2-1

Michael Chang holds a 2–1 lead over Daniel Vacek in their ATP head-to-head. Across 3 main-draw meetings, Daniel Vacek leads 1–0 on carpet, while Michael Chang leads 1–0 on clay. Most recently, Michael Chang won the 1999 Hong Kong Open round of 32 6-1 6-4.

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Michael Chang
USA Age 54 Right-Handed 175 cm / 5'9"
H2H
2 – 1
3 main draw meetings
Daniel Vacek
CZE Age 55 Right-Handed 190 cm / 6'3"

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Michael Chang #40 6-1 6-4 Daniel Vacek #53 Match data Apr 8, 1999* R32 Hong Kong Open ATP World Series → modern equivalent ATP 250 Hard
Daniel Vacek #49 6-2 7-6(5) Michael Chang #5 Match data Oct 26, 1995* R32 Essen Masters Masters 1000 Carpet
Michael Chang #6 6-3 5-7 6-4 6-4 Daniel Vacek #56 Match data Jun 2, 1995* R64 Roland Garros Grand Slam 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
Michael Chang #1,039 #2 4,065 2,113 649 305 68.0% 1 7 0 5 21 34
Daniel Vacek #1,133 #26 1,151 1,821 171 220 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 Michael Chang Daniel Vacek
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
15 1987 4–4 50.0% #163 1,559 0 0 — — — — — — —
16 1988 23–13 63.9% #30 1,842 0 1 — — — — — — —
17 1989 45–17 72.6% #5 1,977 1 3 — — — — — — —
18 1990 34–19 64.2% #15 1,919 1 4 — — — — — — —
19 1991 47–20 70.1% #15 2,003 1 5 — — — — — — —
20 1992 58–23 71.6% #6 1,966 1 8 1991 1–3 25.0% #470 1,490 0 0
21 1993 62–21 74.7% #8 1,992 1 13 — — — — — — —
22 1994 66–19 77.6% #6 2,006 1 19 1993 13–22 37.1% #114 1,559 0 0
23 1995 65–19 77.4% #5 2,011 1 23 1994 25–27 48.1% #45 1,732 0 0
24 1996 63–19 76.8% #2 1,991 1 26 1995 30–31 49.2% #27 1,797 0 0
25 1997 53–18 74.6% #3 1,911 1 31 1996 23–29 44.2% #71 1,692 0 0
26 1998 35–16 68.6% #29 1,848 1 33 1997 19–26 42.2% #53 1,669 0 0
27 1999 27–22 55.1% #50 1,790 1 33 1998 25–29 46.3% #50 1,671 0 0
28 2000 42–26 61.8% #32 1,807 1 34 1999 29–31 48.3% #43 1,740 0 0
29 2001 16–21 43.2% #94 1,699 1 34 2000 4–13 23.5% #238 1,628 0 0
30 2002 7–18 28.0% #124 1,624 1 34 2001 2–7 22.2% #393 1,595 0 0
31 2003 2–10 16.7% #383 1,551 1 34 2002 0–2 0.0% #749 1,577 0 0

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 Michael Chang Daniel Vacek
Yr HardClayGrassCarpet Yr HardClayGrassCarpet
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 %
15 1987 4 4 8 50.0% — — — — — — — — — — — — — — — — — — — — — — — — — — — — —
16 1988 13 8 21 61.9% 4 3 7 57.1% 1 2 3 33.3% 5 0 5 100.0% — — — — — — — — — — — — — — — — —
17 1989 20 8 28 71.4% 12 2 14 85.7% 3 1 4 75.0% 10 6 16 62.5% — — — — — — — — — — — — — — — — —
18 1990 19 8 27 70.4% 4 4 8 50.0% 4 2 6 66.7% 7 5 12 58.3% — — — — — — — — — — — — — — — — —
19 1991 24 11 35 68.6% 6 2 8 75.0% 2 2 4 50.0% 15 5 20 75.0% — — — — — — — — — — — — — — — — —
20 1992 40 8 48 83.3% 9 6 15 60.0% 0 1 1 0.0% 9 8 17 52.9% 1991 0 2 2 0.0% 1 1 2 50.0% — — — — — — — —
21 1993 43 10 53 81.1% 5 3 8 62.5% 2 2 4 50.0% 12 6 18 66.7% — — — — — — — — — — — — — — — — —
22 1994 35 10 45 77.8% 8 2 10 80.0% 4 1 5 80.0% 19 6 25 76.0% 1993 7 9 16 43.8% 4 6 10 40.0% 1 3 4 25.0% 1 4 5 20.0%
23 1995 31 10 41 75.6% 14 2 16 87.5% 1 1 2 50.0% 19 6 25 76.0% 1994 10 11 21 47.6% 3 6 9 33.3% 3 3 6 50.0% 9 7 16 56.3%
24 1996 48 9 57 84.2% 5 3 8 62.5% 0 1 1 0.0% 10 6 16 62.5% 1995 11 11 22 50.0% 4 7 11 36.4% 1 3 4 25.0% 14 10 24 58.3%
25 1997 42 9 51 82.4% 8 3 11 72.7% 3 3 6 50.0% 0 3 3 0.0% 1996 10 11 21 47.6% 4 5 9 44.4% 3 3 6 50.0% 6 10 16 37.5%
26 1998 19 9 28 67.9% 10 4 14 71.4% 1 1 2 50.0% 5 2 7 71.4% 1997 6 11 17 35.3% 2 5 7 28.6% 1 3 4 25.0% 10 7 17 58.8%
27 1999 21 17 38 55.3% 2 4 6 33.3% — — — — 4 1 5 80.0% 1998 17 17 34 50.0% 3 2 5 60.0% 2 3 5 40.0% 3 7 10 30.0%
28 2000 27 16 43 62.8% 6 5 11 54.5% 7 3 10 70.0% 2 2 4 50.0% 1999 20 17 37 54.1% 1 6 7 14.3% 6 3 9 66.7% 2 5 7 28.6%
29 2001 11 13 24 45.8% 4 6 10 40.0% 1 2 3 33.3% — — — — 2000 4 9 13 30.8% 0 4 4 0.0% — — — — — — — —
30 2002 5 13 18 27.8% 1 2 3 33.3% 1 3 4 25.0% — — — — 2001 2 5 7 28.6% — — — — 0 2 2 0.0% — — — —
31 2003 2 9 11 18.2% 0 1 1 0.0% — — — — — — — — 2002 0 2 2 0.0% — — — — — — — — — — — —
Career — 404 172 576 70.1% 98 52 150 65.3% 30 25 55 54.5% 117 56 173 67.6% — 87 105 192 45.3% 22 42 64 34.4% 17 23 40 42.5% 45 50 95 47.4%

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 666/795 of Michael Chang's and 346/391 of Daniel 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 Michael Chang Daniel 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 1991 52/67 1.9 1.4 56.2% 68.0% 54.6% 55.2% 47.7% 61.8% 43.2% — —/— — — — — — — — — —
20 1992 66/81 2.0 1.4 63.8% 68.8% 54.8% 55.7% 47.9% 63.5% 45.0% 1991 4/4 3.8 2.8 61.6% 71.4% 42.5% 43.4% 19.0% 59.1% 34.1%
21 1993 67/83 3.1 2.0 58.4% 69.7% 56.4% 64.2% 45.7% 64.3% 43.1% — —/— — — — — — — — — —
22 1994 71/85 4.3 2.0 56.1% 73.8% 56.4% 58.8% 46.7% 66.1% 43.7% 1993 32/35 6.8 4.4 60.0% 72.6% 54.6% 58.6% 34.4% 65.5% 31.8%
23 1995 72/84 5.8 2.1 54.7% 76.9% 55.3% 60.0% 43.9% 66.9% 43.1% 1994 49/52 7.0 5.4 59.5% 74.6% 50.5% 56.6% 36.0% 65.1% 34.7%
24 1996 72/82 6.4 2.5 50.2% 77.2% 53.5% 61.0% 49.3% 65.3% 44.5% 1995 50/61 8.1 4.3 59.9% 75.7% 51.4% 61.3% 37.4% 65.9% 35.7%
25 1997 59/71 5.9 2.7 52.1% 74.6% 53.9% 63.7% 46.3% 64.7% 43.2% 1996 48/52 7.3 5.1 56.7% 76.2% 49.0% 53.1% 39.3% 64.6% 33.5%
26 1998 43/51 6.2 2.0 54.3% 74.8% 52.5% 61.7% 47.0% 64.6% 41.1% 1997 41/45 8.2 6.8 51.8% 76.0% 46.0% 59.0% 36.2% 61.5% 34.9%
27 1999 41/49 4.2 1.5 56.0% 72.0% 51.8% 56.3% 45.2% 63.0% 40.3% 1998 46/54 7.0 5.1 56.6% 74.9% 47.3% 61.9% 39.4% 62.8% 35.5%
28 2000 56/68 3.4 1.9 55.8% 70.2% 51.0% 59.6% 49.8% 61.7% 41.4% 1999 50/60 4.7 4.6 56.5% 70.1% 47.7% 64.0% 37.1% 60.1% 36.2%
29 2001 34/37 3.7 1.6 57.9% 69.7% 47.4% 57.7% 39.3% 60.1% 40.1% 2000 15/17 4.2 5.4 53.6% 64.8% 40.6% 42.9% 30.9% 53.9% 30.4%
30 2002 21/25 4.1 1.8 55.0% 70.1% 48.0% 55.0% 42.2% 60.2% 35.1% 2001 9/9 6.8 3.4 54.2% 67.3% 50.2% 50.6% 27.2% 59.5% 29.2%
31 2003 12/12 4.6 1.6 56.2% 69.1% 46.1% 31.4% 34.7% 59.2% 32.6% 2002 2/2 5.0 2.5 58.4% 71.8% 37.5% 45.7% 36.5% 57.6% 36.6%
Career — 666/954 4.3 1.9 55.9% 72.4% 53.6% 59.0% 46.2% 63.9% 42.5% — 346/391 6.8 5.0 57.1% 73.7% 48.8% 58.1% 36.5% 63.0% 34.4%

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 Michael Chang Daniel 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
15 1987 1559 121.3 — — — — +34 — — 52.2% +0.09 1–2 (33%) 1–2 (33%) — +0.24 — — — — — — — — — — — — — — — —
16 1988 1842 146.2 — — — — +2 -249 -283 59.2% +0.61 8–5 (62%) 2–4 (33%) — -1.45 — — — — — — — — — — — — — — — —
17 1989 1978 162.9 — — — — -29 -75 -313 68.9% +1.37 8–6 (57%) 8–5 (62%) — -2.14 — — — — — — — — — — — — — — — —
18 1990 1920 158.6 — — — — +10 -23 -163 59.6% +0.75 11–6 (65%) 10–9 (53%) — -1.26 — — — — — — — — — — — — — — — —
19 1991 2003 160.6 +1.22 +4.46 1.132 52.5% +33 -67 -258 61.4% +0.91 18–7 (72%) 9–8 (53%) — -1.51 — — — — — — — — — — — — — — — —
20 1992 1966 166.2 +1.99 +7.08 1.233 54.0% +51 -96 — 65.1% +1.24 16–8 (67%) 8–18 (31%) — -1.65 1991 1490 102.2 -1.04 -0.09 0.834 46.2% — — — 22.2% -1.67 — 1–0 — +0.10
21 1993 1992 160.0 +2.60 +5.19 1.207 53.4% +28 -138 -270 66.4% +1.22 23–10 (70%) 12–16 (43%) — +1.44 — — — — — — — — — — — — — — — —
22 1994 2007 157.5 +3.82 +5.50 1.290 54.5% -9 -130 -197 71.3% +1.45 14–8 (64%) 19–7 (73%) — +0.39 1993 1560 126.4 +2.79 -4.51 0.922 49.1% -2 +9 -4 41.1% -0.61 3–7 (30%) 7–9 (44%) — +0.29
23 1995 2011 165.8 +4.79 +5.90 1.302 54.6% +1 +38 — 70.0% +1.41 16–5 (76%) 15–11 (58%) — -0.91 1994 1732 143.4 +3.08 -2.24 0.992 49.9% -14 -131 -90 47.5% -0.12 12–9 (57%) 13–15 (46%) — -1.41
24 1996 1992 167.8 +3.39 +6.79 1.284 54.8% +58 -22 — 70.3% +1.62 16–3 (84%) 11–9 (55%) — -0.94 1995 1798 148.9 +3.89 -1.17 1.046 50.7% +14 -171 -195 48.7% +0.03 10–11 (48%) 15–18 (45%) — -1.99
25 1997 1911 157.1 +2.72 +5.34 1.224 53.9% +68 +21 -176 66.3% +1.37 17–7 (71%) 13–12 (52%) — +0.71 1996 1692 140.7 +2.32 -3.52 0.945 49.3% +10 -77 -50 45.5% -0.25 12–11 (52%) 14–11 (56%) — -2.02
26 1998 1849 144.8 +1.95 +2.83 1.163 52.9% +24 +87 — 65.1% +1.02 9–9 (50%) 8–7 (53%) — +2.82 1997 1670 134.8 -0.60 -1.91 0.906 48.1% +38 -50 -60 41.8% -0.61 6–7 (46%) 13–12 (52%) — -0.33
27 1999 1791 141.4 +0.54 +2.18 1.090 51.5% +20 +46 — 54.0% +0.38 9–9 (50%) 10–14 (42%) — +0.91 1998 1672 143.3 +0.67 -1.11 0.956 49.4% +16 -20 -40 48.1% -0.21 6–8 (43%) 13–10 (57%) — +0.31
28 2000 1807 140.0 -0.26 +3.59 1.080 51.7% -11 -12 -72 56.2% +0.47 15–9 (63%) 13–10 (57%) — +0.86 1999 1741 133.9 -1.09 -1.27 0.909 48.6% +1 -191 -65 46.2% -0.17 9–4 (69%) 7–11 (39%) — +0.89
29 2001 1699 128.0 -1.43 +1.98 1.006 49.8% -10 +24 -7 44.9% -0.13 4–4 (50%) 3–9 (25%) — +0.59 2000 1629 122.6 -4.37 -4.38 0.659 42.4% +53 -125 — 27.5% -2.08 1–2 (33%) 4–1 (80%) — -1.16
30 2002 1624 130.5 -0.88 -0.51 0.882 48.0% +20 +41 +34 35.3% -0.71 3–6 (33%) 5–7 (42%) — -0.72 2001 1595 122.1 -0.70 -2.81 0.721 45.3% +49 — — 23.8% -1.67 — 1–2 (33%) — -0.96
31 2003 1551 127.1 -0.91 -1.10 0.800 46.1% +26 — — 24.1% -1.59 0–2 0–1 — -0.78 2002 1578 111.7 +0.38 -0.21 0.865 46.5% — — — 16.7% -1.17 — 0–2 — -0.38
Career — 2114 161.6 +2.11 +4.69 1.178 53.1% +21 -33 -160 62.8% +0.99 188–106 (64%) 147–149 (50%) 98.2 -0.36 — 1822 143.7 +1.22 -2.21 0.930 48.9% +12 -96 -70 44.3% -0.37 59–59 (50%) 88–91 (49%) 102.9 -1.71

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.