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

Tom Okker vs Clark Graebner H2H: 2-0

Tom Okker holds a 2–0 lead over Clark Graebner in their ATP head-to-head. Across 2 main-draw meetings, Tom Okker leads 1–0 on grass and 1–0 on hard courts. Most recently, Tom Okker won the 1971 US Open quarterfinal 6-2 6-3 6-4.

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Tom Okker
NED Age 82 Right-Handed 177 cm / 5'10"
H2H
2 – 0
2 main draw meetings
Clark Graebner
USA Age 82 Right-Handed 188 cm / 6'2"

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Tom Okker 6-2 6-3 6-4 Clark Graebner Match data Sep 12, 1971* QF US Open Grand Slam Grass
Tom Okker 4-6 6-4 6-4 5-7 6-3 Clark Graebner Match data Apr 6, 1968* SF South African Open 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
Tom Okker #438 #3 0 2,196 668 278 70.6% 0 0 0 1 33 34
Clark Graebner #199 #45 0 2,014 342 161 68.0% 0 0 0 0 12 12

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 Tom Okker Clark Graebner
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
24 1968 89–23 79.5% — 1,793 0 4 1968 74–22 77.1% — 1,818 0 2
25 1969 86–25 77.5% — 2,029 0 12 1969 49–14 77.8% — 1,840 0 6
26 1970 59–27 68.6% — 1,947 0 17 1970 58–28 67.4% — 1,840 0 8
27 1971 74–31 70.5% — 2,012 0 19 1971 75–29 72.1% — 1,868 0 11
28 1972 69–31 69.0% — 2,042 0 20 1972 33–22 60.0% — 1,811 0 11
29 1973 91–23 79.8% #4 2,171 0 27 1973 34–19 64.2% #48 1,770 0 12
30 1974 61–18 77.2% #6 2,074 0 30 1974 11–13 45.8% #99 1,693 0 12
31 1975 39–13 75.0% #11 2,076 0 32 1975 8–11 42.1% #120 1,583 0 12
32 1976 33–18 64.7% #23 1,962 0 32 1976 0–3 0.0% #199 1,540 0 12
33 1977 15–13 53.6% #29 1,935 0 33 — — — — — — —
34 1978 20–20 50.0% #50 1,882 0 33 — — — — — — —
35 1979 20–18 52.6% #56 1,774 0 34 — — — — — — —
36 1980 11–13 45.8% #107 1,716 0 34 — — — — — — —
37 1981 1–5 16.7% — 1,652 0 34 — — — — — — —

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 Tom Okker Clark Graebner
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 %
24 1968 26 9 35 74.3% 35 7 42 83.3% 20 2 22 90.9% 8 5 13 61.5% 1968 30 11 41 73.2% 9 3 12 75.0% 28 6 34 82.4% 7 2 9 77.8%
25 1969 19 9 28 67.9% 36 6 42 85.7% 14 4 18 77.8% 17 6 23 73.9% 1969 13 2 15 86.7% 10 4 14 71.4% 22 6 28 78.6% 4 2 6 66.7%
26 1970 15 6 21 71.4% 16 3 19 84.2% 21 12 33 63.6% 7 6 13 53.8% 1970 15 11 26 57.7% 22 6 28 78.6% 12 3 15 80.0% 9 8 17 52.9%
27 1971 12 7 19 63.2% 24 10 34 70.6% 13 4 17 76.5% 25 10 35 71.4% 1971 36 9 45 80.0% 19 7 26 73.1% 14 5 19 73.7% 6 8 14 42.9%
28 1972 22 10 32 68.8% 10 5 15 66.7% 2 1 3 66.7% 35 15 50 70.0% 1972 17 10 27 63.0% 2 2 4 50.0% 9 4 13 69.2% 5 6 11 45.5%
29 1973 16 5 21 76.2% 39 8 47 83.0% 4 2 6 66.7% 32 8 40 80.0% 1973 18 8 26 69.2% 5 4 9 55.6% 3 3 6 50.0% 8 4 12 66.7%
30 1974 14 5 19 73.7% 17 6 23 73.9% 6 2 8 75.0% 24 5 29 82.8% 1974 2 4 6 33.3% 4 4 8 50.0% 2 2 4 50.0% 3 3 6 50.0%
31 1975 13 3 16 81.3% 1 3 4 25.0% 10 1 11 90.9% 15 6 21 71.4% 1975 0 1 1 0.0% 3 4 7 42.9% — — — — 5 6 11 45.5%
32 1976 6 3 9 66.7% 7 5 12 58.3% 5 2 7 71.4% 15 8 23 65.2% 1976 0 1 1 0.0% — — — — — — — — 0 2 2 0.0%
33 1977 4 4 8 50.0% 0 1 1 0.0% 3 1 4 75.0% 8 7 15 53.3% — — — — — — — — — — — — — — — — —
34 1978 3 4 7 42.9% 9 8 17 52.9% 6 2 8 75.0% 2 6 8 25.0% — — — — — — — — — — — — — — — — —
35 1979 11 6 17 64.7% 3 5 8 37.5% 4 1 5 80.0% 2 6 8 25.0% — — — — — — — — — — — — — — — — —
36 1980 5 4 9 55.6% 2 5 7 28.6% 2 1 3 66.7% 2 3 5 40.0% — — — — — — — — — — — — — — — — —
37 1981 1 3 4 25.0% 0 1 1 0.0% 0 1 1 0.0% — — — — — — — — — — — — — — — — — — — — —
Career — 167 78 245 68.2% 199 73 272 73.2% 110 36 146 75.3% 192 91 283 67.8% — 131 57 188 69.7% 74 34 108 68.5% 90 29 119 75.6% 47 41 88 53.4%

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 Tom Okker Clark Graebner
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
24 1968 1794 133.7 — — — — +101 +28 +106 72.8% +1.68 13–8 (62%) — — +1.39 1968 1819 133.7 — — — — +90 -116 +78 73.3% +1.64 10–8 (56%) — — +0.49
25 1969 2030 149.0 — — — — +67 +67 -72 73.5% +1.60 14–8 (64%) 2–0 — -4.53 1969 1841 131.4 — — — — +153 -98 +107 71.5% +1.35 8–5 (62%) 1–0 — +5.30
26 1970 1947 145.1 — — — — -16 +206 +16 66.5% +1.16 8–11 (42%) 7–4 (64%) — +2.19 1970 1841 135.3 — — — — -21 +68 +150 62.4% +0.83 17–8 (68%) 4–2 (67%) — +2.59
27 1971 2013 159.9 — — — — +69 +10 +75 65.3% +1.09 15–11 (58%) 15–22 (41%) — -6.81 1971 1868 141.1 — — — — +44 +29 +136 65.4% +1.01 21–7 (75%) 17–15 (53%) — +5.35
28 1972 2043 156.9 — — — — +57 -30 -5 63.5% +1.01 22–10 (69%) 24–19 (56%) — -5.06 1972 1811 136.3 — — — — +27 +71 +133 58.0% +0.62 5–8 (38%) 6–4 (60%) — +3.04
29 1973 2171 158.0 — — — — +40 -10 -158 70.9% +1.31 23–7 (77%) 20–10 (67%) — -4.78 1973 1770 134.1 — — — — +58 +80 +109 62.2% +0.84 6–5 (55%) 9–9 (50%) — +3.67
30 1974 2074 157.5 — — — — +132 +65 -20 68.6% +0.99 20–3 (87%) 22–8 (73%) — -4.73 1974 1693 114.0 — — — — +41 +100 +143 46.2% -0.38 6–5 (55%) 3–4 (43%) — +1.75
31 1975 2076 152.1 — — — — +76 -53 +48 70.1% +1.53 9–4 (69%) 5–2 (71%) — -1.17 1975 1584 111.5 — — — — +73 +121 — 52.4% -0.05 0–5 (0%) 6–3 (67%) — +3.44
32 1976 1963 149.2 — — — — +53 -21 +146 61.5% +0.73 7–4 (64%) 5–4 (56%) — -1.71 1976 1541 91.6 — — — — +44 — — 0.0% -3.83 — — — +0.51
33 1977 1936 150.8 — — — — +16 — +174 52.1% +0.08 6–4 (60%) 2–1 (67%) — -2.95 — — — — — — — — — — — — — — — —
34 1978 1882 150.6 — — — — -30 -29 +247 51.9% +0.15 7–7 (50%) 5–5 (50%) — -4.63 — — — — — — — — — — — — — — — —
35 1979 1774 131.3 — — — — +9 -16 +387 51.0% +0.03 8–5 (62%) 8–8 (50%) — 0.00 — — — — — — — — — — — — — — — —
36 1980 1717 136.0 — — — — +27 -8 +440 47.5% -0.25 3–5 (38%) 5–2 (71%) — +0.78 — — — — — — — — — — — — — — — —
37 1981 1653 106.8 — — — — +39 — — 26.7% -1.20 0–1 0–3 (0%) — -0.28 — — — — — — — — — — — — — — — —
Career — 2196 154.7 — — — — +57 +28 +63 65.9% +1.08 155–88 (64%) 120–88 (58%) 102.9 -3.45 — 2015 136.6 — — — — +51 +24 +113 64.3% +0.96 73–51 (59%) 46–37 (55%) 100.5 +5.29

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.