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

Byron Black vs Daniel Vacek H2H: 3-0

Byron Black holds a 3–0 lead over Daniel Vacek in their ATP head-to-head. Across 3 main-draw meetings, Byron Black leads 3–0 on hard courts. Most recently, Byron Black won the 1998 Japan Open semifinal 6-3 7-5.

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Byron Black
ZIM Age 56 Right-Handed 175 cm / 5'9"
H2H
3 – 0
3 main draw meetings
Daniel Vacek
CZE Age 55 Right-Handed 190 cm / 6'3"

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Byron Black #67 6-3 7-5 Daniel Vacek #89 Match data Apr 18, 1998* SF Japan Open ATP Championship Series → modern equivalent ATP 500 Hard
Byron Black #40 7-6(7) 6-7(5) 6-4 Daniel Vacek #27 Match data Jan 6, 1996* QF Adelaide International World Series → modern equivalent ATP 250 Hard
Byron Black #112 6-3 6-3 Daniel Vacek #105 Match data Aug 20, 1993* R16 New Haven 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.

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
Byron Black #876 #22 1,283 1,873 240 230 51.1% 0 0 0 0 2 2
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 Byron Black Daniel Vacek
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
20 — — — — — — — 1991 1–3 25.0% #470 1,490 0 0
21 1991 2–3 40.0% #123 1,521 0 0 — — — — — — —
22 1992 10–18 35.7% #142 1,544 0 0 1993 13–22 37.1% #114 1,559 0 0
23 1993 19–20 48.7% #84 1,662 0 0 1994 25–27 48.1% #45 1,732 0 0
24 1994 22–26 45.8% #66 1,734 0 0 1995 30–31 49.2% #27 1,797 0 0
25 1995 28–24 53.8% #40 1,834 0 0 1996 23–29 44.2% #71 1,692 0 0
26 1996 35–27 56.5% #44 1,746 0 1 1997 19–26 42.2% #53 1,669 0 0
27 1997 27–24 52.9% #76 1,723 0 1 1998 25–29 46.3% #50 1,671 0 0
28 1998 37–25 59.7% #28 1,737 0 1 1999 29–31 48.3% #43 1,740 0 0
29 1999 24–23 51.1% #65 1,690 0 2 2000 4–13 23.5% #238 1,628 0 0
30 2000 27–24 52.9% #35 1,710 0 2 2001 2–7 22.2% #393 1,595 0 0
31 2001 8–13 38.1% #196 1,652 0 2 2002 0–2 0.0% #749 1,577 0 0
32 2002 1–3 25.0% #317 1,636 0 2 — — — — — — —

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 Byron Black 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 %
20 — — — — — — — — — — — — — — — — — 1991 0 2 2 0.0% 1 1 2 50.0% — — — — — — — —
21 1991 1 2 3 33.3% — — — — 1 1 2 50.0% — — — — — — — — — — — — — — — — — — — — —
22 1992 7 10 17 41.2% 0 2 2 0.0% 2 3 5 40.0% 1 3 4 25.0% 1993 7 9 16 43.8% 4 6 10 40.0% 1 3 4 25.0% 1 4 5 20.0%
23 1993 10 11 21 47.6% 1 1 2 50.0% 5 4 9 55.6% 3 4 7 42.9% 1994 10 11 21 47.6% 3 6 9 33.3% 3 3 6 50.0% 9 7 16 56.3%
24 1994 14 17 31 45.2% 0 1 1 0.0% 4 4 8 50.0% 4 4 8 50.0% 1995 11 11 22 50.0% 4 7 11 36.4% 1 3 4 25.0% 14 10 24 58.3%
25 1995 12 12 24 50.0% 1 2 3 33.3% 7 4 11 63.6% 8 6 14 57.1% 1996 10 11 21 47.6% 4 5 9 44.4% 3 3 6 50.0% 6 10 16 37.5%
26 1996 21 15 36 58.3% 1 3 4 25.0% 4 4 8 50.0% 9 5 14 64.3% 1997 6 11 17 35.3% 2 5 7 28.6% 1 3 4 25.0% 10 7 17 58.8%
27 1997 16 14 30 53.3% 4 5 9 44.4% 5 3 8 62.5% 2 2 4 50.0% 1998 17 17 34 50.0% 3 2 5 60.0% 2 3 5 40.0% 3 7 10 30.0%
28 1998 24 16 40 60.0% 2 2 4 50.0% 10 3 13 76.9% 1 4 5 20.0% 1999 20 17 37 54.1% 1 6 7 14.3% 6 3 9 66.7% 2 5 7 28.6%
29 1999 12 15 27 44.4% 2 1 3 66.7% 2 3 5 40.0% 8 4 12 66.7% 2000 4 9 13 30.8% 0 4 4 0.0% — — — — — — — —
30 2000 17 16 33 51.5% 1 4 5 20.0% 9 3 12 75.0% 0 1 1 0.0% 2001 2 5 7 28.6% — — — — 0 2 2 0.0% — — — —
31 2001 4 9 13 30.8% 0 1 1 0.0% 4 3 7 57.1% — — — — 2002 0 2 2 0.0% — — — — — — — — — — — —
32 2002 1 3 4 25.0% — — — — — — — — — — — — — — — — — — — — — — — — — — — — —
Career — 139 140 279 49.8% 12 22 34 35.3% 53 35 88 60.2% 36 33 69 52.2% — 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 381/470 of Byron Black'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 Byron Black 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%
20 — —/— — — — — — — — — — 1991 4/4 3.8 2.8 61.6% 71.4% 42.5% 43.4% 19.0% 59.1% 34.1%
21 1991 4/5 3.0 2.8 56.1% 63.3% 48.1% 30.0% 32.9% 56.7% 35.5% — —/— — — — — — — — — —
22 1992 21/28 2.4 3.0 60.8% 64.6% 50.3% 49.1% 40.0% 58.9% 38.4% 1993 32/35 6.8 4.4 60.0% 72.6% 54.6% 58.6% 34.4% 65.5% 31.8%
23 1993 36/39 2.9 3.6 60.3% 64.1% 48.9% 55.0% 49.1% 57.8% 40.0% 1994 49/52 7.0 5.4 59.5% 74.6% 50.5% 56.6% 36.0% 65.1% 34.7%
24 1994 42/48 3.2 2.5 57.5% 67.6% 49.1% 56.6% 44.7% 59.6% 37.7% 1995 50/61 8.1 4.3 59.9% 75.7% 51.4% 61.3% 37.4% 65.9% 35.7%
25 1995 40/52 3.8 2.9 60.8% 70.9% 51.6% 57.0% 39.7% 63.4% 38.2% 1996 48/52 7.3 5.1 56.7% 76.2% 49.0% 53.1% 39.3% 64.6% 33.5%
26 1996 47/62 2.5 2.6 60.1% 65.3% 50.9% 57.2% 48.7% 59.4% 37.8% 1997 41/45 8.2 6.8 51.8% 76.0% 46.0% 59.0% 36.2% 61.5% 34.9%
27 1997 41/51 4.0 3.0 57.5% 68.7% 51.7% 56.7% 44.2% 61.2% 41.1% 1998 46/54 7.0 5.1 56.6% 74.9% 47.3% 61.9% 39.4% 62.8% 35.5%
28 1998 46/62 3.8 2.4 60.0% 68.6% 52.1% 59.0% 43.0% 62.0% 40.8% 1999 50/60 4.7 4.6 56.5% 70.1% 47.7% 64.0% 37.1% 60.1% 36.2%
29 1999 42/47 4.9 2.3 59.3% 68.9% 51.3% 59.2% 37.1% 61.8% 38.3% 2000 15/17 4.2 5.4 53.6% 64.8% 40.6% 42.9% 30.9% 53.9% 30.4%
30 2000 40/51 3.5 1.6 62.1% 70.9% 53.0% 60.1% 42.1% 64.1% 40.4% 2001 9/9 6.8 3.4 54.2% 67.3% 50.2% 50.6% 27.2% 59.5% 29.2%
31 2001 20/21 2.2 1.7 64.3% 65.2% 51.4% 50.5% 42.5% 60.0% 34.9% 2002 2/2 5.0 2.5 58.4% 71.8% 37.5% 45.7% 36.5% 57.6% 36.6%
32 2002 2/4 3.0 1.0 66.7% 62.0% 42.4% 43.7% 55.6% 54.9% 29.3% — —/— — — — — — — — — —
Career — 381/470 3.4 2.6 60.0% 67.7% 51.0% 56.4% 43.3% 60.9% 38.9% — 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 Byron Black 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
20 — — — — — — — — — — — — — — — — 1991 1490 102.2 -1.04 -0.09 0.834 46.2% — — — 22.2% -1.67 — 1–0 — +0.10
21 1991 1521 104.2 -1.02 -0.06 0.821 45.3% +14 — — 41.7% -0.83 1–1 1–1 — -0.22 — — — — — — — — — — — — — — — —
22 1992 1545 120.6 -1.55 +0.16 0.935 48.9% +19 — +38 39.1% -0.64 2–6 (25%) 6–5 (55%) — +0.55 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 1993 1663 132.7 -3.10 +1.66 0.948 49.0% -11 — -11 50.0% 0.00 3–4 (43%) 5–6 (45%) — +1.18 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 1994 1735 137.9 -1.20 +0.09 0.933 48.6% 0 — -52 44.4% -0.50 8–4 (67%) 10–9 (53%) — -1.35 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 1995 1834 141.6 +1.31 +1.27 1.043 50.6% -19 -332 -108 53.3% -0.04 9–9 (50%) 17–8 (68%) — -0.98 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 1996 1747 135.8 -2.17 +0.51 0.929 48.8% +32 -274 -13 51.4% -0.06 13–5 (72%) 11–10 (52%) — +0.90 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 1997 1724 143.0 -0.46 +2.90 1.057 51.0% +19 -166 +77 51.6% +0.20 7–7 (50%) 11–8 (58%) — -1.28 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 1998 1738 141.5 +0.32 +2.69 1.074 51.1% -11 -159 +112 57.4% +0.59 10–8 (56%) 8–12 (40%) — +1.98 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 1999 1691 138.9 -0.27 +0.43 1.001 49.9% +27 -63 +73 48.7% 0.00 7–4 (64%) 5–9 (36%) — +0.97 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 2000 1711 136.3 +1.49 +2.31 1.126 52.1% -21 -150 +129 53.6% +0.51 6–8 (43%) 9–14 (39%) — +1.00 2001 1595 122.1 -0.70 -2.81 0.721 45.3% +49 — — 23.8% -1.67 — 1–2 (33%) — -0.96
31 2001 1652 123.1 -1.09 -1.12 0.873 47.9% -23 — +160 36.7% -0.80 2–1 (67%) 3–5 (38%) — -1.02 2002 1578 111.7 +0.38 -0.21 0.865 46.5% — — — 16.7% -1.17 — 0–2 — -0.38
32 2002 1637 107.3 -2.90 -0.76 0.651 44.4% +5 — — 25.0% -1.50 1–0 0–1 — +0.04 — — — — — — — — — — — — — — — —
Career — 1873 141.2 -0.61 +1.24 0.995 49.9% +4 -184 +41 49.9% 0.00 69–57 (55%) 86–88 (49%) 103.5 +0.38 — 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.