H2H data updated: 2026-09-03 00:00 UTC

Jan Kukal vs Geoff Masters H2H: 0-1

Geoff Masters holds a 1–0 lead over Jan Kukal in their ATP head-to-head. Across 1 main-draw meeting, Geoff Masters leads 1–0 on hard courts. Most recently, Geoff Masters won the 1974 St. Petersburg Wct round of 32 6-0 6-3.

Want to explore more matchups? Advanced rivalry search lets you browse current and historical rivalries, unbeaten records, or every matchup for a player.

Jan Kukal
CZE Age 83 Right-Handed
H2H
0 – 1
1 main draw meetings
Geoff Masters
AUS Age 75 Right-Handed

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Geoff Masters 6-0 6-3 Jan Kukal Match data Feb 7, 1974* R32 St. Petersburg Wct ATP 250 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
Jan Kukal #955 #115 5 1,644 57 81 41.3% 0 0 0 0 0 0
Geoff Masters #826 #42 0 1,889 237 253 48.4% 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 Jan Kukal Geoff Masters
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
17 — — — — — — — 1968 2–2 50.0% — 1,511 0 0
18 — — — — — — — 1969 7–6 53.8% — 1,542 0 0
19 — — — — — — — 1970 10–7 58.8% — 1,581 0 0
20 — — — — — — — 1971 19–22 46.3% — 1,573 0 0
21 — — — — — — — 1972 18–18 50.0% — 1,670 0 0
22 — — — — — — — 1973 28–23 54.9% #52 1,756 0 0
23 — — — — — — — 1974 23–21 52.3% #53 1,766 0 1
24 — — — — — — — 1975 27–24 52.9% #44 1,812 0 1
25 1968 16–17 48.5% — 1,531 0 0 1976 27–31 46.6% #53 1,780 0 2
26 1969 13–11 54.2% — 1,582 0 0 1977 22–27 44.9% #83 1,662 0 2
27 1970 13–13 50.0% — 1,637 0 0 1978 20–20 50.0% #59 1,701 0 2
28 1971 4–9 30.8% — 1,544 0 0 1979 21–23 47.7% #62 1,728 0 2
29 1972 6–12 33.3% — 1,514 0 0 1980 13–28 31.7% #166 1,517 0 2
30 1973 2–13 13.3% #216 1,442 0 0 1981 0–1 0.0% — 1,501 0 2
31 1974 0–4 0.0% #245 1,424 0 0 — — — — — — —
32 1975 2–1 66.7% #306 1,462 0 0 — — — — — — —
33 1976 1–1 50.0% #288 1,484 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 Jan Kukal Geoff Masters
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 — — — — — — — — — — — — — — — — — 1968 — — — — — — — — 2 2 4 50.0% — — — —
18 — — — — — — — — — — — — — — — — — 1969 — — — — 3 3 6 50.0% 4 3 7 57.1% — — — —
19 — — — — — — — — — — — — — — — — — 1970 — — — — 4 3 7 57.1% 6 4 10 60.0% — — — —
20 — — — — — — — — — — — — — — — — — 1971 3 9 12 25.0% 5 6 11 45.5% 11 7 18 61.1% — — — —
21 — — — — — — — — — — — — — — — — — 1972 11 5 16 68.8% 5 5 10 50.0% 2 7 9 22.2% 0 1 1 0.0%
22 — — — — — — — — — — — — — — — — — 1973 8 4 12 66.7% 15 13 28 53.6% 5 6 11 45.5% — — — —
23 — — — — — — — — — — — — — — — — — 1974 2 8 10 20.0% 11 5 16 68.8% 9 4 13 69.2% 1 4 5 20.0%
24 — — — — — — — — — — — — — — — — — 1975 9 9 18 50.0% 5 6 11 45.5% 6 3 9 66.7% 7 6 13 53.8%
25 1968 8 7 15 53.3% 5 7 12 41.7% 0 1 1 0.0% 3 2 5 60.0% 1976 11 6 17 64.7% 6 9 15 40.0% 3 5 8 37.5% 7 11 18 38.9%
26 1969 5 4 9 55.6% 6 4 10 60.0% 1 2 3 33.3% 1 1 2 50.0% 1977 15 11 26 57.7% 0 2 2 0.0% 5 9 14 35.7% 2 5 7 28.6%
27 1970 1 1 2 50.0% 5 5 10 50.0% 4 5 9 44.4% 3 2 5 60.0% 1978 7 5 12 58.3% 3 2 5 60.0% 4 4 8 50.0% 6 9 15 40.0%
28 1971 2 2 4 50.0% 2 5 7 28.6% 0 2 2 0.0% — — — — 1979 2 4 6 33.3% 4 3 7 57.1% 9 6 15 60.0% 6 10 16 37.5%
29 1972 0 1 1 0.0% 4 9 13 30.8% 2 2 4 50.0% — — — — 1980 2 6 8 25.0% 2 7 9 22.2% 1 6 7 14.3% 8 9 17 47.1%
30 1973 0 5 5 0.0% 1 7 8 12.5% — — — — 1 1 2 50.0% 1981 — — — — — — — — 0 1 1 0.0% — — — —
31 1974 0 2 2 0.0% 0 1 1 0.0% — — — — 0 1 1 0.0% — — — — — — — — — — — — — — — — —
32 1975 — — — — — — — — 2 1 3 66.7% — — — — — — — — — — — — — — — — — — — — —
33 1976 — — — — — — — — 1 1 2 50.0% — — — — — — — — — — — — — — — — — — — — —
Career — 16 22 38 42.1% 23 38 61 37.7% 10 14 24 41.7% 8 7 15 53.3% — 70 67 137 51.1% 63 64 127 49.6% 67 67 134 50.0% 37 55 92 40.2%

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 Jan Kukal Geoff Masters
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 — — — — — — — — — — — — — — — — 1968 1511 104.2 — — — — — — +30 54.5% +0.45 — — — +0.07
18 — — — — — — — — — — — — — — — — 1969 1542 108.7 — — — — — +20 -1 53.1% +0.47 2–1 (67%) — — +1.09
19 — — — — — — — — — — — — — — — — 1970 1581 113.8 — — — — — +4 +1 48.9% +0.09 2–0 0–1 — +2.04
20 — — — — — — — — — — — — — — — — 1971 1573 113.6 — — — — -110 +36 +80 44.4% -0.32 9–3 (75%) 1–3 (25%) — +2.45
21 — — — — — — — — — — — — — — — — 1972 1670 122.7 — — — — -2 -18 -123 48.0% +0.02 6–6 (50%) 3–4 (43%) — +1.43
22 — — — — — — — — — — — — — — — — 1973 1756 140.1 — — — — 0 -38 -146 52.2% +0.18 11–7 (61%) 8–9 (47%) — -1.32
23 — — — — — — — — — — — — — — — — 1974 1766 141.0 — — — — -125 +49 -11 52.2% +0.31 8–7 (53%) 3–6 (33%) — -2.52
24 — — — — — — — — — — — — — — — — 1975 1812 148.9 — — — — -23 -36 +8 53.0% +0.27 10–12 (45%) 6–8 (43%) — -3.09
25 1968 1532 112.5 — — — — +78 -53 — 50.0% +0.28 4–4 (50%) — — +0.31 1976 1781 148.0 — — — — +86 -91 -12 48.5% +0.04 4–8 (33%) 9–4 (69%) — -2.30
26 1969 1583 117.5 — — — — +94 -22 -92 50.8% +0.05 4–3 (57%) — — +1.26 1977 1662 120.4 — — — — +90 — -42 44.1% -0.40 8–10 (44%) 6–9 (40%) — +2.97
27 1970 1637 116.3 — — — — +91 -34 -117 49.4% +0.05 5–2 (71%) — — +2.03 1978 1701 140.0 — — — — +47 -24 -35 51.0% +0.09 5–8 (38%) 5–5 (50%) — +1.79
28 1971 1544 105.8 — — — — +116 +6 — 32.1% -1.32 0–2 1–1 — +0.68 1979 1729 143.8 — — — — -31 -3 -1 48.1% -0.11 8–8 (50%) 8–7 (53%) — -2.12
29 1972 1515 115.3 — — — — — +5 -2 37.3% -0.73 2–3 (40%) 1–1 — +0.68 1980 1518 124.9 — — — — +79 +146 +101 36.6% -0.87 4–8 (33%) 8–8 (50%) — -0.05
30 1973 1443 102.3 — — — — +119 +1 — 22.9% -1.29 1–3 (25%) 1–6 (14%) — +0.61 1981 1501 94.8 — — — — — — — 0.0% -4.00 — — — +0.19
31 1974 1424 97.9 — — — — — — — 0.0% -4.50 — — — +0.21 — — — — — — — — — — — — — — — —
32 1975 1462 110.1 — — — — — — +90 62.5% +0.75 1–1 1–0 — +0.20 — — — — — — — — — — — — — — — —
33 1976 1484 110.7 — — — — — — — 50.0% -0.50 — — — +0.18 — — — — — — — — — — — — — — — —
Career — 1645 116.8 — — — — +92 -18 -56 44.1% -0.27 17–18 (49%) 4–8 (33%) 98.8 +4.74 — 1890 139.6 — — — — +20 -4 -11 48.2% -0.04 77–78 (50%) 57–64 (47%) 99.9 +0.13

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.