H2H data updated: 2026-09-04 00:00 UTC

Byron Bertram vs Vladimir Zednik H2H: 1-0

Byron Bertram holds a 1–0 lead over Vladimir Zednik in their ATP head-to-head. Across 1 main-draw meeting, Byron Bertram leads 1–0 on grass. Most recently, Byron Bertram won the 1971 Wimbledon round of 128 6-3 3-6 6-2 6-0.

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Byron Bertram
RSA Age 73 Right-Handed
H2H
1 – 0
1 main draw meetings
Vladimir Zednik
CZE Age 79 Right-Handed

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Byron Bertram 6-3 3-6 6-2 6-0 Vladimir Zednik Match data Jun 23, 1971* R128 Wimbledon Grand Slam Grass

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 Bertram #150 #57 0 1,815 115 139 45.3% 0 0 0 0 0 0
Vladimir Zednik #300 #35 0 1,757 113 158 41.7% 0 0 0 0 2 2

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 Bertram Vladimir Zednik
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
16 1969 0–3 0.0% — 1,467 0 0 — — — — — — —
17 1970 11–11 50.0% — 1,540 0 0 — — — — — — —
18 1971 9–13 40.9% — 1,547 0 0 — — — — — — —
19 1972 2–2 50.0% — 1,536 0 0 — — — — — — —
20 1973 11–10 52.4% #152 1,617 0 0 — — — — — — —
21 1974 15–13 53.6% #156 1,655 0 0 1968 1–1 50.0% — 1,500 0 0
22 1975 5–8 38.5% #120 1,652 0 0 1969 4–2 66.7% — 1,561 0 0
23 1976 23–24 48.9% #57 1,737 0 0 1970 6–7 46.2% — 1,576 0 0
24 1977 21–27 43.8% #87 1,744 0 0 1971 17–20 45.9% — 1,629 0 0
25 1978 10–11 47.6% #92 1,668 0 0 1972 19–20 48.7% — 1,653 0 1
26 1979 1–2 33.3% #219 1,649 0 0 1973 14–24 36.8% #90 1,636 0 1
27 1980 7–15 31.8% #150 1,570 0 0 1974 12–19 38.7% #93 1,635 0 1
28 — — — — — — — 1975 3–11 21.4% #157 1,622 0 1
29 — — — — — — — 1976 5–11 31.2% #106 1,593 0 1
30 — — — — — — — 1977 9–13 40.9% #66 1,642 0 1
31 — — — — — — — 1978 22–22 50.0% #70 1,660 0 2
32 — — — — — — — 1979 1–7 12.5% #300 1,582 0 2
33 — — — — — — — 1980 0–1 0.0% — 1,572 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 Bertram Vladimir Zednik
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 %
16 1969 0 3 3 0.0% — — — — — — — — — — — — — — — — — — — — — — — — — — — — —
17 1970 1 3 4 25.0% 2 3 5 40.0% 8 5 13 61.5% — — — — — — — — — — — — — — — — — — — — —
18 1971 4 5 9 44.4% 0 2 2 0.0% 5 4 9 55.6% 0 2 2 0.0% — — — — — — — — — — — — — — — — —
19 1972 1 1 2 50.0% — — — — 1 1 2 50.0% — — — — — — — — — — — — — — — — — — — — —
20 1973 3 3 6 50.0% 1 3 4 25.0% 6 3 9 66.7% 1 1 2 50.0% — — — — — — — — — — — — — — — — —
21 1974 3 1 4 75.0% 1 4 5 20.0% 1 1 2 50.0% 10 7 17 58.8% 1968 — — — — 1 1 2 50.0% — — — — — — — —
22 1975 1 3 4 25.0% 3 3 6 50.0% 1 1 2 50.0% 0 1 1 0.0% 1969 3 1 4 75.0% 1 1 2 50.0% — — — — — — — —
23 1976 7 4 11 63.6% 13 15 28 46.4% 0 1 1 0.0% 3 4 7 42.9% 1970 — — — — 2 3 5 40.0% 3 3 6 50.0% 1 1 2 50.0%
24 1977 7 10 17 41.2% 4 7 11 36.4% 6 3 9 66.7% 4 7 11 36.4% 1971 9 10 19 47.4% 5 5 10 50.0% 0 4 4 0.0% 3 1 4 75.0%
25 1978 0 3 3 0.0% 0 1 1 0.0% 0 1 1 0.0% 10 6 16 62.5% 1972 4 6 10 40.0% 5 6 11 45.5% 0 2 2 0.0% 10 6 16 62.5%
26 1979 0 1 1 0.0% — — — — — — — — 1 1 2 50.0% 1973 0 3 3 0.0% 8 9 17 47.1% 3 3 6 50.0% 3 9 12 25.0%
27 1980 4 6 10 40.0% 0 3 3 0.0% 1 4 5 20.0% 2 2 4 50.0% 1974 0 2 2 0.0% 4 6 10 40.0% 5 6 11 45.5% 3 5 8 37.5%
28 — — — — — — — — — — — — — — — — — 1975 0 2 2 0.0% 3 2 5 60.0% — — — — 0 7 7 0.0%
29 — — — — — — — — — — — — — — — — — 1976 1 2 3 33.3% 3 8 11 27.3% — — — — 1 1 2 50.0%
30 — — — — — — — — — — — — — — — — — 1977 0 1 1 0.0% 7 8 15 46.7% — — — — 2 4 6 33.3%
31 — — — — — — — — — — — — — — — — — 1978 1 3 4 25.0% 19 12 31 61.3% 0 1 1 0.0% 2 6 8 25.0%
32 — — — — — — — — — — — — — — — — — 1979 0 3 3 0.0% 0 2 2 0.0% — — — — 1 2 3 33.3%
33 — — — — — — — — — — — — — — — — — 1980 0 1 1 0.0% — — — — — — — — — — — —
Career — 31 43 74 41.9% 24 41 65 36.9% 29 24 53 54.7% 31 31 62 50.0% — 18 34 52 34.6% 58 63 121 47.9% 11 19 30 36.7% 26 42 68 38.2%

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 Bertram Vladimir Zednik
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
16 1969 1467 97.7 — — — — +26 — — 20.0% -2.20 — — — -0.10 — — — — — — — — — — — — — — — —
17 1970 1541 119.6 — — — — -55 -40 +104 49.1% -0.21 0–1 — — +0.86 — — — — — — — — — — — — — — — —
18 1971 1547 108.9 — — — — -39 — +97 47.5% -0.13 2–7 (22%) 3–2 (60%) — +2.12 — — — — — — — — — — — — — — — —
19 1972 1536 105.5 — — — — — — — 54.5% +1.27 — 0–1 — +0.31 — — — — — — — — — — — — — — — —
20 1973 1618 113.6 — — — — +1 -147 +39 49.0% -0.12 5–3 (63%) 2–2 (50%) — +1.62 — — — — — — — — — — — — — — — —
21 1974 1655 122.3 — — — — +78 -202 — 53.2% +0.08 5–3 (63%) 5–2 (71%) — +2.72 1968 1500 101.6 — — — — — — — 60.0% +0.60 0–1 — — +0.06
22 1975 1653 123.3 — — — — +13 -136 — 44.1% -0.26 2–3 (40%) 3–2 (60%) — -0.16 1969 1562 110.4 — — — — +69 — — 58.8% +0.47 1–0 — — +0.42
23 1976 1737 135.3 — — — — +19 -143 — 48.7% -0.04 10–8 (56%) 5–6 (45%) — -0.81 1970 1576 112.1 — — — — — -41 -8 44.2% -0.47 3–1 (75%) 3–0 (100%) — +0.55
24 1977 1745 136.0 — — — — -14 -174 +50 43.4% -0.53 11–5 (69%) 4–7 (36%) — -2.84 1971 1630 112.7 — — — — +20 -4 -140 46.0% -0.41 6–7 (46%) 6–4 (60%) — +2.74
25 1978 1668 116.8 — — — — +30 — — 45.7% -0.35 2–1 (67%) 3–1 (75%) — +3.30 1972 1654 127.7 — — — — +75 -41 — 47.8% -0.14 5–3 (63%) 10–5 (67%) — +1.73
26 1979 1650 106.6 — — — — +23 — — 28.6% -0.86 1–0 0–1 — +0.39 1973 1637 128.2 — — — — +13 +39 -160 42.9% -0.51 2–5 (29%) 3–8 (27%) — -0.89
27 1980 1570 124.2 — — — — +66 -71 +169 38.9% -0.57 2–5 (29%) 5–6 (45%) — -0.40 1974 1636 122.3 — — — — -16 -23 -87 43.5% -0.32 3–7 (30%) 8–5 (62%) — -0.80
28 — — — — — — — — — — — — — — — — 1975 1623 129.9 — — — — -78 +27 — 29.0% -0.93 3–1 (75%) 1–6 (14%) — -1.26
29 — — — — — — — — — — — — — — — — 1976 1593 122.5 — — — — -42 -10 — 38.1% -0.67 3–6 (33%) 4–3 (57%) — -0.27
30 — — — — — — — — — — — — — — — — 1977 1643 134.4 — — — — -94 -5 — 50.8% +0.08 1–10 (9%) 4–5 (44%) — +0.22
31 — — — — — — — — — — — — — — — — 1978 1661 140.4 — — — — -123 +79 — 50.0% +0.10 6–8 (43%) 6–10 (38%) — +1.28
32 — — — — — — — — — — — — — — — — 1979 1583 117.3 — — — — -87 — — 11.8% -2.00 1–0 0–3 (0%) — +0.12
33 — — — — — — — — — — — — — — — — 1980 1573 101.3 — — — — — — — 33.3% 0.00 0–1 0–2 — -0.06
Career — 1816 130.3 — — — — +20 -141 +86 46.2% -0.25 40–36 (53%) 30–30 (50%) 106.0 +2.79 — 1757 133.1 — — — — -7 +19 -94 44.8% -0.30 34–50 (40%) 45–51 (47%) 99.4 +1.45

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.