H2H data updated: 2026-09-02 00:00 UTC

Jan Kodes vs Byron Bertram H2H: 1-1

Jan Kodes and Byron Bertram are tied 1–1 in their ATP head-to-head. Across 2 main-draw meetings, Jan Kodes leads 1–0 on clay, while Byron Bertram leads 1–0 on hard courts. Most recently, Byron Bertram won the 1977 Vienna Open round of 32 6-7 7-6 6-3.

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Jan Kodes
CZE Age 80 Right-Handed 175 cm / 5'9"
H2H
1 – 1
2 main draw meetings
Byron Bertram
RSA Age 73 Right-Handed

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Byron Bertram #71 6-7 7-6 6-3 Jan Kodes #38 Match data Oct 27, 1977* R32 Vienna Open ATP 250 Hard
Jan Kodes 6-3 6-2 Byron Bertram Match data Aug 20, 1976* R32 Canadian Open ATP 500 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
Jan Kodes #1,109 #5 14 2,122 471 276 63.1% 3 0 0 0 7 10
Byron Bertram #150 #57 0 1,815 115 139 45.3% 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 Kodes Byron Bertram
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
22 1968 23–18 56.1% — 1,605 0 0 1975 5–8 38.5% #120 1,652 0 0
23 1969 32–19 62.7% — 1,738 0 1 1976 23–24 48.9% #57 1,737 0 0
24 1970 58–31 65.2% — 1,820 1 3 1977 21–27 43.8% #87 1,744 0 0
25 1971 49–23 68.1% — 1,977 2 5 1978 10–11 47.6% #92 1,668 0 0
26 1972 44–15 74.6% — 1,941 2 6 1979 1–2 33.3% #219 1,649 0 0
27 1973 51–20 71.8% #9 1,936 3 8 1980 7–15 31.8% #150 1,570 0 0
28 1974 45–23 66.2% #17 1,922 3 8 — — — — — — —
29 1975 55–21 72.4% #19 1,985 3 9 — — — — — — —
30 1976 49–21 70.0% #19 1,986 3 10 — — — — — — —
31 1977 30–25 54.5% #41 1,854 3 10 — — — — — — —
32 1978 13–18 41.9% #119 1,757 3 10 — — — — — — —
33 1979 16–16 50.0% #88 1,704 3 10 — — — — — — —
34 1980 5–13 27.8% #221 1,583 3 10 — — — — — — —
35 1981 1–7 12.5% — 1,510 3 10 — — — — — — —
36 1982 0–5 0.0% — 1,466 3 10 — — — — — — —
37 1983 0–1 0.0% #504 1,449 3 10 — — — — — — —

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 Jan Kodes Byron Bertram
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%
22 1968 10 6 16 62.5% 13 8 21 61.9% 0 1 1 0.0% 0 3 3 0.0% 1975 1 3 4 25.0% 3 3 6 50.0% 1 1 2 50.0% 0 1 1 0.0%
23 1969 7 5 12 58.3% 20 9 29 69.0% 2 2 4 50.0% 3 3 6 50.0% 1976 7 4 11 63.6% 13 15 28 46.4% 0 1 1 0.0% 3 4 7 42.9%
24 1970 16 12 28 57.1% 42 11 53 79.2% 0 1 1 0.0% 0 7 7 0.0% 1977 7 10 17 41.2% 4 7 11 36.4% 6 3 9 66.7% 4 7 11 36.4%
25 1971 15 9 24 62.5% 25 6 31 80.6% 6 4 10 60.0% 3 4 7 42.9% 1978 0 3 3 0.0% 0 1 1 0.0% 0 1 1 0.0% 10 6 16 62.5%
26 1972 5 3 8 62.5% 31 7 38 81.6% 6 2 8 75.0% 2 3 5 40.0% 1979 0 1 1 0.0% — — — — — — — — 1 1 2 50.0%
27 1973 0 3 3 0.0% 19 7 26 73.1% 16 2 18 88.9% 16 8 24 66.7% 1980 4 6 10 40.0% 0 3 3 0.0% 1 4 5 20.0% 2 2 4 50.0%
28 1974 7 4 11 63.6% 16 9 25 64.0% 10 3 13 76.9% 12 7 19 63.2% — — — — — — — — — — — — — — — — —
29 1975 1 2 3 33.3% 35 10 45 77.8% 2 2 4 50.0% 17 7 24 70.8% — — — — — — — — — — — — — — — — —
30 1976 — — — — 38 13 51 74.5% — — — — 11 8 19 57.9% — — — — — — — — — — — — — — — — —
31 1977 7 8 15 46.7% 19 10 29 65.5% 0 1 1 0.0% 4 6 10 40.0% — — — — — — — — — — — — — — — — —
32 1978 3 3 6 50.0% 8 10 18 44.4% 0 1 1 0.0% 2 4 6 33.3% — — — — — — — — — — — — — — — — —
33 1979 6 6 12 50.0% 10 9 19 52.6% 0 1 1 0.0% — — — — — — — — — — — — — — — — — — — — —
34 1980 0 3 3 0.0% 4 7 11 36.4% 1 1 2 50.0% 0 2 2 0.0% — — — — — — — — — — — — — — — — —
35 1981 0 1 1 0.0% 1 5 6 16.7% 0 1 1 0.0% — — — — — — — — — — — — — — — — — — — — —
36 1982 — — — — 0 5 5 0.0% — — — — — — — — — — — — — — — — — — — — — — — — —
37 1983 — — — — 0 1 1 0.0% — — — — — — — — — — — — — — — — — — — — — — — — —
Career — 77 65 142 54.2% 281 127 408 68.9% 43 22 65 66.2% 70 62 132 53.0% — 31 43 74 41.9% 24 41 65 36.9% 29 24 53 54.7% 31 31 62 50.0%

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 Jan Kodes Byron Bertram
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
22 1968 1605 118.0 — — — — -36 +42 — 56.1% +0.68 5–9 (36%) — — -0.12 1975 1653 123.3 — — — — +13 -136 — 44.1% -0.26 2–3 (40%) 3–2 (60%) — -0.16
23 1969 1738 130.3 — — — — -81 +93 -208 60.3% +0.76 10–9 (53%) — — +2.03 1976 1737 135.3 — — — — +19 -143 — 48.7% -0.04 10–8 (56%) 5–6 (45%) — -0.81
24 1970 1820 143.1 — — — — -122 +159 — 63.2% +1.07 11–11 (50%) 3–0 (100%) — +2.16 1977 1745 136.0 — — — — -14 -174 +50 43.4% -0.53 11–5 (69%) 4–7 (36%) — -2.84
25 1971 1978 151.3 — — — — -117 +115 -220 62.9% +0.93 16–9 (64%) 7–2 (78%) — -1.49 1978 1668 116.8 — — — — +30 — — 45.7% -0.35 2–1 (67%) 3–1 (75%) — +3.30
26 1972 1942 149.8 — — — — -111 +207 -133 68.5% +1.30 8–5 (62%) 7–3 (70%) — +0.38 1979 1650 106.6 — — — — +23 — — 28.6% -0.86 1–0 0–1 — +0.39
27 1973 1937 151.7 — — — — -54 +97 +95 65.5% +1.02 14–8 (64%) 4–7 (36%) — -0.84 1980 1570 124.2 — — — — +66 -71 +169 38.9% -0.57 2–5 (29%) 5–6 (45%) — -0.40
28 1974 1923 150.6 — — — — +12 +34 +136 63.7% +0.97 10–9 (53%) 8–7 (53%) — -2.48 — — — — — — — — — — — — — — — —
29 1975 1986 152.7 — — — — -43 +124 -4 65.8% +1.06 14–8 (64%) 8–6 (57%) — +1.04 — — — — — — — — — — — — — — — —
30 1976 1986 154.1 — — — — -46 +46 — 64.5% +1.06 11–6 (65%) 8–12 (40%) — +1.98 — — — — — — — — — — — — — — — —
31 1977 1855 150.0 — — — — -30 +83 — 55.2% +0.36 9–10 (47%) 8–3 (73%) — -2.80 — — — — — — — — — — — — — — — —
32 1978 1757 139.9 — — — — +40 +72 — 43.8% -0.40 5–5 (50%) 3–4 (43%) — -2.06 — — — — — — — — — — — — — — — —
33 1979 1704 135.5 — — — — +72 +67 — 47.7% -0.22 8–6 (57%) 7–7 (50%) — +0.10 — — — — — — — — — — — — — — — —
34 1980 1584 112.7 — — — — +90 +91 — 30.4% -1.65 2–4 (33%) 2–1 (67%) — +0.22 — — — — — — — — — — — — — — — —
35 1981 1510 103.4 — — — — — +86 — 15.8% -2.63 0–1 — — +0.28 — — — — — — — — — — — — — — — —
36 1982 1466 103.6 — — — — — +64 — 0.0% -3.20 — — — -0.03 — — — — — — — — — — — — — — — —
37 1983 1449 96.0 — — — — — — — 0.0% -3.50 — — — +0.31 — — — — — — — — — — — — — — — —
Career — 2122 150.1 — — — — -50 +102 -11 60.1% +0.73 123–100 (55%) 65–52 (56%) 100.3 -0.18 — 1816 130.3 — — — — +20 -141 +86 46.2% -0.25 40–36 (53%) 30–30 (50%) 106.0 +2.79

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.