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

Andy Kohlberg vs Geoff Masters H2H: 0-1

Geoff Masters holds a 1–0 lead over Andy Kohlberg in their ATP head-to-head. Across 1 main-draw meeting, Geoff Masters leads 1–0 on clay. Most recently, Geoff Masters won the 1980 Italian Open round of 64 7-5 6-2.

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Andy Kohlberg
USA Age 67 Left-Handed 178 cm / 5'10"
H2H
0 – 1
1 main draw meetings
Geoff Masters
AUS Age 75 Right-Handed

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Geoff Masters #63 7-5 6-2 Andy Kohlberg Match data May 21, 1980* R64 Italian 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
Andy Kohlberg #997 #142 0 1,517 13 37 26.0% 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 Andy Kohlberg Geoff Masters
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
17 — — — — — — — 1968 2–2 50.0% — 1,511 0 0
18 1978 0–1 0.0% #496 1,484 0 0 1969 7–6 53.8% — 1,542 0 0
19 1979 1–7 12.5% #261 1,460 0 0 1970 10–7 58.8% — 1,581 0 0
20 1980 3–7 30.0% #264 1,470 0 0 1971 19–22 46.3% — 1,573 0 0
21 1981 0–3 0.0% — 1,453 0 0 1972 18–18 50.0% — 1,670 0 0
22 1982 4–8 33.3% — 1,477 0 0 1973 28–23 54.9% #52 1,756 0 0
23 1983 0–1 0.0% #211 1,460 0 0 1974 23–21 52.3% #53 1,766 0 1
24 1984 2–2 50.0% #217 1,497 0 0 1975 27–24 52.9% #44 1,812 0 1
25 1985 1–5 16.7% #184 1,476 0 0 1976 27–31 46.6% #53 1,780 0 2
26 1986 1–1 50.0% #393 1,499 0 0 1977 22–27 44.9% #83 1,662 0 2
27 1987 1–1 50.0% #354 1,515 0 0 1978 20–20 50.0% #59 1,701 0 2
28 1988 0–1 0.0% #980 1,505 0 0 1979 21–23 47.7% #62 1,728 0 2
29 — — — — — — — 1980 13–28 31.7% #166 1,517 0 2
30 — — — — — — — 1981 0–1 0.0% — 1,501 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 Andy Kohlberg 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 1978 — — — — 0 1 1 0.0% — — — — — — — — 1969 — — — — 3 3 6 50.0% 4 3 7 57.1% — — — —
19 1979 0 4 4 0.0% 0 2 2 0.0% — — — — 1 1 2 50.0% 1970 — — — — 4 3 7 57.1% 6 4 10 60.0% — — — —
20 1980 1 2 3 33.3% 1 3 4 25.0% 1 1 2 50.0% 0 1 1 0.0% 1971 3 9 12 25.0% 5 6 11 45.5% 11 7 18 61.1% — — — —
21 1981 0 2 2 0.0% 0 1 1 0.0% — — — — — — — — 1972 11 5 16 68.8% 5 5 10 50.0% 2 7 9 22.2% 0 1 1 0.0%
22 1982 2 4 6 33.3% 0 1 1 0.0% 0 1 1 0.0% 2 2 4 50.0% 1973 8 4 12 66.7% 15 13 28 53.6% 5 6 11 45.5% — — — —
23 1983 — — — — — — — — — — — — 0 1 1 0.0% 1974 2 8 10 20.0% 11 5 16 68.8% 9 4 13 69.2% 1 4 5 20.0%
24 1984 2 2 4 50.0% — — — — — — — — — — — — 1975 9 9 18 50.0% 5 6 11 45.5% 6 3 9 66.7% 7 6 13 53.8%
25 1985 1 3 4 25.0% 0 1 1 0.0% — — — — 0 1 1 0.0% 1976 11 6 17 64.7% 6 9 15 40.0% 3 5 8 37.5% 7 11 18 38.9%
26 1986 — — — — — — — — — — — — 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 1987 1 1 2 50.0% — — — — — — — — — — — — 1978 7 5 12 58.3% 3 2 5 60.0% 4 4 8 50.0% 6 9 15 40.0%
28 1988 0 1 1 0.0% — — — — — — — — — — — — 1979 2 4 6 33.3% 4 3 7 57.1% 9 6 15 60.0% 6 10 16 37.5%
29 — — — — — — — — — — — — — — — — — 1980 2 6 8 25.0% 2 7 9 22.2% 1 6 7 14.3% 8 9 17 47.1%
30 — — — — — — — — — — — — — — — — — 1981 — — — — — — — — 0 1 1 0.0% — — — —
Career — 7 19 26 26.9% 1 9 10 10.0% 1 2 3 33.3% 4 7 11 36.4% — 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 Andy Kohlberg 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 1978 1484 96.6 — — — — — — — 0.0% -3.00 — — — +0.21 1969 1542 108.7 — — — — — +20 -1 53.1% +0.47 2–1 (67%) — — +1.09
19 1979 1460 117.4 — — — — +44 — — 30.4% -1.04 1–4 (20%) 0–2 — -0.04 1970 1581 113.8 — — — — — +4 +1 48.9% +0.09 2–0 0–1 — +2.04
20 1980 1471 120.7 — — — — +17 +29 — 34.8% -0.96 0–1 1–1 — +0.17 1971 1573 113.6 — — — — -110 +36 +80 44.4% -0.32 9–3 (75%) 1–3 (25%) — +2.45
21 1981 1453 100.2 — — — — — — — 0.0% -2.86 — — — -0.23 1972 1670 122.7 — — — — -2 -18 -123 48.0% +0.02 6–6 (50%) 3–4 (43%) — +1.43
22 1982 1478 116.4 — — — — +22 — — 34.5% -0.69 2–2 (50%) 2–5 (29%) — +0.75 1973 1756 140.1 — — — — 0 -38 -146 52.2% +0.18 11–7 (61%) 8–9 (47%) — -1.32
23 1983 1460 95.3 — — — — — — — 0.0% -3.50 — — — +0.36 1974 1766 141.0 — — — — -125 +49 -11 52.2% +0.31 8–7 (53%) 3–6 (33%) — -2.52
24 1984 1497 114.1 — — — — +19 — — 40.0% -1.50 2–0 1–0 — +0.06 1975 1812 148.9 — — — — -23 -36 +8 53.0% +0.27 10–12 (45%) 6–8 (43%) — -3.09
25 1985 1476 109.1 — — — — +24 — — 36.8% -1.11 1–4 (20%) 0–2 — +0.16 1976 1781 148.0 — — — — +86 -91 -12 48.5% +0.04 4–8 (33%) 9–4 (69%) — -2.30
26 1986 1500 112.1 — — — — — — — 40.0% -0.40 1–0 — — -0.20 1977 1662 120.4 — — — — +90 — -42 44.1% -0.40 8–10 (44%) 6–9 (40%) — +2.97
27 1987 1515 107.2 — — — — — — — 50.0% 0.00 1–1 1–0 — -0.13 1978 1701 140.0 — — — — +47 -24 -35 51.0% +0.09 5–8 (38%) 5–5 (50%) — +1.79
28 1988 1506 102.3 — — — — — — — 33.3% -1.00 0–1 1–0 — -0.08 1979 1729 143.8 — — — — -31 -3 -1 48.1% -0.11 8–8 (50%) 8–7 (53%) — -2.12
29 — — — — — — — — — — — — — — — — 1980 1518 124.9 — — — — +79 +146 +101 36.6% -0.87 4–8 (33%) 8–8 (50%) — -0.05
30 — — — — — — — — — — — — — — — — 1981 1501 94.8 — — — — — — — 0.0% -4.00 — — — +0.19
Career — 1517 122.7 — — — — +26 +29 — 32.6% -1.09 8–13 (38%) 6–10 (38%) 97.5 +2.06 — 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.