H2H data updated: 2026-09-05 00:00 UTC

Byron Black vs Marcos Ondruska H2H: 1-0

Byron Black holds a 1–0 lead over Marcos Ondruska in their ATP head-to-head. Across 1 main-draw meeting, Byron Black leads 1–0 on clay. Most recently, Byron Black won the 1997 Delray Beach Open round of 32 6-3 6-2.

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Byron Black
ZIM Age 56 Right-Handed 175 cm / 5'9"
H2H
1 – 0
1 main draw meetings
Marcos Ondruska
RSA Age 53 Right-Handed 183 cm / 6'0"

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Byron Black #64 6-3 6-2 Marcos Ondruska #105 Match data May 8, 1997* R32 Delray Beach Open World Series → modern equivalent ATP 250 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
Byron Black #876 #22 1,283 1,873 240 230 51.1% 0 0 0 0 2 2
Marcos Ondruska #1,352 #27 1,007 1,786 106 138 43.4% 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 Marcos Ondruska
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
17 — — — — — — — 1990 3–3 50.0% #256 1,537 0 0
18 — — — — — — — 1991 3–5 37.5% #137 1,589 0 0
19 — — — — — — — 1992 11–10 52.4% #67 1,640 0 0
20 — — — — — — — 1993 26–29 47.3% #47 1,568 0 0
21 1991 2–3 40.0% #123 1,521 0 0 1994 15–17 46.9% #98 1,686 0 0
22 1992 10–18 35.7% #142 1,544 0 0 1995 16–19 45.7% #114 1,665 0 0
23 1993 19–20 48.7% #84 1,662 0 0 1996 17–20 45.9% #102 1,675 0 0
24 1994 22–26 45.8% #66 1,734 0 0 1997 12–16 42.9% #113 1,656 0 0
25 1995 28–24 53.8% #40 1,834 0 0 1998 2–10 16.7% #142 1,541 0 0
26 1996 35–27 56.5% #44 1,746 0 1 1999 0–2 0.0% #159 1,520 0 0
27 1997 27–24 52.9% #76 1,723 0 1 2000 0–5 0.0% #204 1,477 0 0
28 1998 37–25 59.7% #28 1,737 0 1 2001 1–2 33.3% #263 1,569 0 0
29 1999 24–23 51.1% #65 1,690 0 2 — — — — — — —
30 2000 27–24 52.9% #35 1,710 0 2 — — — — — — —
31 2001 8–13 38.1% #196 1,652 0 2 — — — — — — —
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 Marcos Ondruska
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 %
17 — — — — — — — — — — — — — — — — — 1990 3 3 6 50.0% — — — — — — — — — — — —
18 — — — — — — — — — — — — — — — — — 1991 1 3 4 25.0% 2 1 3 66.7% — — — — 0 1 1 0.0%
19 — — — — — — — — — — — — — — — — — 1992 7 7 14 50.0% 4 1 5 80.0% 0 2 2 0.0% — — — —
20 — — — — — — — — — — — — — — — — — 1993 12 11 23 52.2% 10 11 21 47.6% 4 3 7 57.1% 0 4 4 0.0%
21 1991 1 2 3 33.3% — — — — 1 1 2 50.0% — — — — 1994 11 9 20 55.0% 3 5 8 37.5% 1 2 3 33.3% 0 1 1 0.0%
22 1992 7 10 17 41.2% 0 2 2 0.0% 2 3 5 40.0% 1 3 4 25.0% 1995 11 12 23 47.8% 1 3 4 25.0% 3 3 6 50.0% 1 1 2 50.0%
23 1993 10 11 21 47.6% 1 1 2 50.0% 5 4 9 55.6% 3 4 7 42.9% 1996 13 13 26 50.0% 0 3 3 0.0% 2 3 5 40.0% 2 1 3 66.7%
24 1994 14 17 31 45.2% 0 1 1 0.0% 4 4 8 50.0% 4 4 8 50.0% 1997 6 10 16 37.5% 4 3 7 57.1% 1 2 3 33.3% 1 1 2 50.0%
25 1995 12 12 24 50.0% 1 2 3 33.3% 7 4 11 63.6% 8 6 14 57.1% 1998 2 7 9 22.2% 0 1 1 0.0% — — — — 0 2 2 0.0%
26 1996 21 15 36 58.3% 1 3 4 25.0% 4 4 8 50.0% 9 5 14 64.3% 1999 0 1 1 0.0% 0 1 1 0.0% — — — — — — — —
27 1997 16 14 30 53.3% 4 5 9 44.4% 5 3 8 62.5% 2 2 4 50.0% 2000 0 4 4 0.0% — — — — 0 1 1 0.0% — — — —
28 1998 24 16 40 60.0% 2 2 4 50.0% 10 3 13 76.9% 1 4 5 20.0% 2001 0 1 1 0.0% 1 1 2 50.0% — — — — — — — —
29 1999 12 15 27 44.4% 2 1 3 66.7% 2 3 5 40.0% 8 4 12 66.7% — — — — — — — — — — — — — — — — —
30 2000 17 16 33 51.5% 1 4 5 20.0% 9 3 12 75.0% 0 1 1 0.0% — — — — — — — — — — — — — — — — —
31 2001 4 9 13 30.8% 0 1 1 0.0% 4 3 7 57.1% — — — — — — — — — — — — — — — — — — — — —
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% — 66 81 147 44.9% 25 30 55 45.5% 11 16 27 40.7% 4 11 15 26.7%

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 206/238 of Marcos Ondruska'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 Marcos Ondruska
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%
18 — —/— — — — — — — — — — 1991 6/8 0.8 1.2 60.4% 61.6% 45.5% 53.7% 54.4% 53.8% 38.1%
19 — —/— — — — — — — — — — 1992 18/21 1.6 2.1 63.0% 62.9% 49.3% 50.1% 45.0% 57.6% 45.0%
20 — —/— — — — — — — — — — 1993 52/55 2.1 3.6 58.9% 64.5% 48.0% 56.6% 45.3% 57.6% 41.2%
21 1991 4/5 3.0 2.8 56.1% 63.3% 48.1% 30.0% 32.9% 56.7% 35.5% 1994 28/32 2.9 3.9 55.5% 68.3% 46.4% 53.4% 52.7% 58.4% 41.4%
22 1992 21/28 2.4 3.0 60.8% 64.6% 50.3% 49.1% 40.0% 58.9% 38.4% 1995 35/35 3.6 3.8 55.6% 69.3% 45.9% 59.4% 50.1% 59.1% 39.7%
23 1993 36/39 2.9 3.6 60.3% 64.1% 48.9% 55.0% 49.1% 57.8% 40.0% 1996 28/37 3.4 2.9 60.1% 67.6% 48.4% 47.7% 41.6% 59.6% 39.7%
24 1994 42/48 3.2 2.5 57.5% 67.6% 49.1% 56.6% 44.7% 59.6% 37.7% 1997 24/28 3.5 4.5 56.5% 66.3% 44.2% 53.2% 41.3% 56.8% 36.8%
25 1995 40/52 3.8 2.9 60.8% 70.9% 51.6% 57.0% 39.7% 63.4% 38.2% 1998 8/12 3.0 3.4 59.1% 63.2% 40.3% 66.6% 47.6% 53.8% 34.1%
26 1996 47/62 2.5 2.6 60.1% 65.3% 50.9% 57.2% 48.7% 59.4% 37.8% 1999 2/2 1.5 6.5 59.5% 59.5% 38.3% 55.0% 21.4% 51.9% 34.5%
27 1997 41/51 4.0 3.0 57.5% 68.7% 51.7% 56.7% 44.2% 61.2% 41.1% 2000 3/5 4.0 5.7 59.6% 66.5% 39.8% 49.2% 20.0% 56.0% 31.2%
28 1998 46/62 3.8 2.4 60.0% 68.6% 52.1% 59.0% 43.0% 62.0% 40.8% 2001 2/3 4.0 8.0 58.1% 67.0% 49.1% 53.5% 35.8% 59.5% 36.8%
29 1999 42/47 4.9 2.3 59.3% 68.9% 51.3% 59.2% 37.1% 61.8% 38.3% — —/— — — — — — — — — —
30 2000 40/51 3.5 1.6 62.1% 70.9% 53.0% 60.1% 42.1% 64.1% 40.4% — —/— — — — — — — — — —
31 2001 20/21 2.2 1.7 64.3% 65.2% 51.4% 50.5% 42.5% 60.0% 34.9% — —/— — — — — — — — — —
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% — 206/244 2.8 3.6 58.2% 66.2% 46.6% 54.6% 45.8% 57.8% 40.0%

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 Marcos Ondruska
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
17 — — — — — — — — — — — — — — — — 1990 1537 111.9 — — — — +45 — — 41.7% -1.25 1–1 1–0 — +0.20
18 — — — — — — — — — — — — — — — — 1991 1589 127.8 -3.07 +0.45 0.825 46.5% -15 +24 — 40.0% -0.60 1–1 0–1 — -0.46
19 — — — — — — — — — — — — — — — — 1992 1641 118.5 -2.04 +3.41 1.062 51.0% -37 +25 — 50.0% +0.14 4–2 (67%) 2–3 (40%) 102.8 +1.64
20 — — — — — — — — — — — — — — — — 1993 1568 136.6 -2.53 +2.02 0.972 49.6% +55 +92 +20 49.3% -0.07 7–11 (39%) 5–5 (50%) 96.4 +1.65
21 1991 1521 104.2 -1.02 -0.06 0.821 45.3% +14 — — 41.7% -0.83 1–1 1–1 — -0.22 1994 1687 133.1 -1.29 +1.94 0.994 50.0% -8 -54 -101 51.1% +0.02 6–10 (38%) 6–5 (55%) 97.5 -0.64
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%) 98.8 +0.55 1995 1666 131.0 -2.18 +1.47 0.970 49.6% +20 -47 -65 46.9% -0.02 8–7 (53%) 4–9 (31%) 98.1 -0.51
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%) 99.1 +1.18 1996 1675 135.7 -1.48 +1.63 0.982 49.3% +38 -128 -51 45.8% -0.15 5–5 (50%) 7–8 (47%) 97.4 -1.02
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%) 106.8 -1.35 1997 1656 124.4 -3.01 -0.51 0.853 47.2% +1 -41 -28 38.0% -0.69 7–2 (78%) 4–7 (36%) 106.2 -0.01
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%) 105.4 -0.98 1998 1541 113.3 -3.51 -1.85 0.737 44.6% +23 — — 23.3% -1.53 1–2 (33%) 1–4 (20%) 96.2 +0.28
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%) 105.9 +0.90 1999 1520 102.7 -1.06 +2.09 0.716 43.6% — — — 0.0% -2.80 — — — -0.12
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%) 103.5 -1.28 2000 1477 113.2 -2.58 +2.02 0.709 43.5% +31 — — 16.7% -2.50 0–2 2–1 (67%) — -0.49
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%) 98.0 +1.98 2001 1569 114.2 -1.90 +4.79 0.909 48.2% — — — 33.3% -1.83 1–0 1–1 — -0.37
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%) 99.2 +0.97 — — — — — — — — — — — — — — — —
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%) 95.3 +1.00 — — — — — — — — — — — — — — — —
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%) 98.7 -1.02 — — — — — — — — — — — — — — — —
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 — 1786 135.2 -2.21 +1.52 0.947 49.0% +19 +16 -37 44.4% -0.33 41–43 (49%) 33–44 (43%) 97.0 +0.06

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.