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

Thomaz Koch vs Tom Okker H2H: 1-1

Thomaz Koch and Tom Okker are tied 1–1 in their ATP head-to-head. Across 2 main-draw meetings, Thomaz Koch leads 1–0 on clay, while Tom Okker leads 1–0 on grass. Most recently, Thomaz Koch won the 1974 Tehran quarterfinal 7-6 7-6.

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Thomaz Koch
BRA Age 81 Left-Handed
H2H
1 – 1
2 main draw meetings
Tom Okker
NED Age 82 Right-Handed 177 cm / 5'10"

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Thomaz Koch 7-6 7-6 Tom Okker Match data Nov 1, 1974* QF Tehran ATP 250 Clay
Tom Okker 4-6 6-2 6-3 5-7 6-4 Thomaz Koch Match data Sep 3, 1974* R32 US Open 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
Thomaz Koch #857 #24 0 1,880 199 157 55.9% 0 0 0 0 6 6
Tom Okker #438 #3 0 2,196 668 278 70.6% 0 0 0 1 33 34

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 Thomaz Koch Tom Okker
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
23 1968 29–17 63.0% — 1,672 0 1 — — — — — — —
24 1969 34–18 65.4% — 1,796 0 4 1968 89–23 79.5% — 1,793 0 4
25 1970 18–15 54.5% — 1,804 0 4 1969 86–25 77.5% — 2,029 0 12
26 1971 24–13 64.9% — 1,747 0 5 1970 59–27 68.6% — 1,947 0 17
27 1972 19–17 52.8% — 1,706 0 6 1971 74–31 70.5% — 2,012 0 19
28 1973 5–6 45.5% #204 1,698 0 6 1972 69–31 69.0% — 2,042 0 20
29 1974 22–12 64.7% #24 1,863 0 6 1973 91–23 79.8% #4 2,171 0 27
30 1975 19–21 47.5% #62 1,768 0 6 1974 61–18 77.2% #6 2,074 0 30
31 1976 15–8 65.2% #58 1,815 0 6 1975 39–13 75.0% #11 2,076 0 32
32 1977 1–6 14.3% #94 1,715 0 6 1976 33–18 64.7% #23 1,962 0 32
33 — — — — — — — 1977 15–13 53.6% #29 1,935 0 33
34 1979 4–7 36.4% #85 1,665 0 6 1978 20–20 50.0% #50 1,882 0 33
35 1980 7–9 43.8% #49 1,654 0 6 1979 20–18 52.6% #56 1,774 0 34
36 1981 0–2 0.0% #90 1,630 0 6 1980 11–13 45.8% #107 1,716 0 34
37 1982 1–5 16.7% — 1,594 0 6 1981 1–5 16.7% — 1,652 0 34
38 1983 1–1 50.0% #185 1,585 0 6 — — — — — — —

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 Thomaz Koch Tom Okker
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 %
23 1968 9 5 14 64.3% 18 9 27 66.7% 1 2 3 33.3% 1 1 2 50.0% — — — — — — — — — — — — — — — — —
24 1969 12 6 18 66.7% 12 3 15 80.0% 1 4 5 20.0% 9 5 14 64.3% 1968 26 9 35 74.3% 35 7 42 83.3% 20 2 22 90.9% 8 5 13 61.5%
25 1970 12 7 19 63.2% — — — — 1 2 3 33.3% 5 6 11 45.5% 1969 19 9 28 67.9% 36 6 42 85.7% 14 4 18 77.8% 17 6 23 73.9%
26 1971 6 4 10 60.0% 6 3 9 66.7% 5 3 8 62.5% 7 3 10 70.0% 1970 15 6 21 71.4% 16 3 19 84.2% 21 12 33 63.6% 7 6 13 53.8%
27 1972 4 5 9 44.4% 2 4 6 33.3% 7 3 10 70.0% 6 5 11 54.5% 1971 12 7 19 63.2% 24 10 34 70.6% 13 4 17 76.5% 25 10 35 71.4%
28 1973 4 4 8 50.0% 1 1 2 50.0% 0 1 1 0.0% — — — — 1972 22 10 32 68.8% 10 5 15 66.7% 2 1 3 66.7% 35 15 50 70.0%
29 1974 4 2 6 66.7% 12 7 19 63.2% 3 2 5 60.0% 3 1 4 75.0% 1973 16 5 21 76.2% 39 8 47 83.0% 4 2 6 66.7% 32 8 40 80.0%
30 1975 1 4 5 20.0% 12 11 23 52.2% 0 2 2 0.0% 6 4 10 60.0% 1974 14 5 19 73.7% 17 6 23 73.9% 6 2 8 75.0% 24 5 29 82.8%
31 1976 3 1 4 75.0% 4 4 8 50.0% — — — — 8 3 11 72.7% 1975 13 3 16 81.3% 1 3 4 25.0% 10 1 11 90.9% 15 6 21 71.4%
32 1977 0 2 2 0.0% 1 1 2 50.0% 0 1 1 0.0% 0 2 2 0.0% 1976 6 3 9 66.7% 7 5 12 58.3% 5 2 7 71.4% 15 8 23 65.2%
33 — — — — — — — — — — — — — — — — — 1977 4 4 8 50.0% 0 1 1 0.0% 3 1 4 75.0% 8 7 15 53.3%
34 1979 1 3 4 25.0% 3 4 7 42.9% — — — — — — — — 1978 3 4 7 42.9% 9 8 17 52.9% 6 2 8 75.0% 2 6 8 25.0%
35 1980 0 1 1 0.0% 3 4 7 42.9% 1 3 4 25.0% 3 1 4 75.0% 1979 11 6 17 64.7% 3 5 8 37.5% 4 1 5 80.0% 2 6 8 25.0%
36 1981 0 1 1 0.0% 0 1 1 0.0% — — — — — — — — 1980 5 4 9 55.6% 2 5 7 28.6% 2 1 3 66.7% 2 3 5 40.0%
37 1982 — — — — 1 3 4 25.0% — — — — 0 2 2 0.0% 1981 1 3 4 25.0% 0 1 1 0.0% 0 1 1 0.0% — — — —
38 1983 1 1 2 50.0% — — — — — — — — — — — — — — — — — — — — — — — — — — — — —
Career — 57 46 103 55.3% 75 55 130 57.7% 19 23 42 45.2% 48 33 81 59.3% — 167 78 245 68.2% 199 73 272 73.2% 110 36 146 75.3% 192 91 283 67.8%

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 Thomaz Koch Tom Okker
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
23 1968 1672 129.3 — — — — -67 +38 -163 61.0% +1.12 5–9 (36%) — — +0.27 — — — — — — — — — — — — — — — —
24 1969 1796 127.3 — — — — +69 +56 -315 60.8% +0.65 10–7 (59%) — — +3.64 1968 1794 133.7 — — — — +101 +28 +106 72.8% +1.68 13–8 (62%) — — +1.39
25 1970 1804 127.6 — — — — +60 — — 53.9% +0.49 9–1 (90%) 0–2 — +1.66 1969 2030 149.0 — — — — +67 +67 -72 73.5% +1.60 14–8 (64%) 2–0 — -4.53
26 1971 1748 129.9 — — — — +105 +80 -167 65.2% +0.90 3–6 (33%) 7–0 (100%) — +4.08 1970 1947 145.1 — — — — -16 +206 +16 66.5% +1.16 8–11 (42%) 7–4 (64%) — +2.19
27 1972 1706 128.0 — — — — +63 +56 -87 50.6% +0.08 3–6 (33%) 5–6 (45%) — +1.16 1971 2013 159.9 — — — — +69 +10 +75 65.3% +1.09 15–11 (58%) 15–22 (41%) — -6.81
28 1973 1698 118.0 — — — — +46 — — 52.0% -0.12 1–2 (33%) 3–0 (100%) — -0.13 1972 2043 156.9 — — — — +57 -30 -5 63.5% +1.01 22–10 (69%) 24–19 (56%) — -5.06
29 1974 1863 142.6 — — — — -34 -6 -203 61.5% +0.43 5–5 (50%) 7–2 (78%) — -2.09 1973 2171 158.0 — — — — +40 -10 -158 70.9% +1.31 23–7 (77%) 20–10 (67%) — -4.78
30 1975 1769 140.3 — — — — +80 +16 — 49.5% +0.08 9–8 (53%) 4–5 (44%) — -1.45 1974 2074 157.5 — — — — +132 +65 -20 68.6% +0.99 20–3 (87%) 22–8 (73%) — -4.73
31 1976 1816 127.2 — — — — +53 -51 — 60.7% +0.64 5–2 (71%) 3–3 (50%) — +3.43 1975 2076 152.1 — — — — +76 -53 +48 70.1% +1.53 9–4 (69%) 5–2 (71%) — -1.17
32 1977 1715 108.6 — — — — +35 — — 31.8% -1.27 1–3 (25%) 1–1 — +0.02 1976 1963 149.2 — — — — +53 -21 +146 61.5% +0.73 7–4 (64%) 5–4 (56%) — -1.71
33 — — — — — — — — — — — — — — — — 1977 1936 150.8 — — — — +16 — +174 52.1% +0.08 6–4 (60%) 2–1 (67%) — -2.95
34 1979 1665 115.2 — — — — +30 +52 — 42.3% -0.85 1–3 (25%) 1–0 — +0.07 1978 1882 150.6 — — — — -30 -29 +247 51.9% +0.15 7–7 (50%) 5–5 (50%) — -4.63
35 1980 1654 135.1 — — — — +61 +52 -47 46.3% -0.24 1–3 (25%) 3–2 (60%) — -0.22 1979 1774 131.3 — — — — +9 -16 +387 51.0% +0.03 8–5 (62%) 8–8 (50%) — 0.00
36 1981 1630 99.5 — — — — — — — 0.0% -2.75 — — — -0.20 1980 1717 136.0 — — — — +27 -8 +440 47.5% -0.25 3–5 (38%) 5–2 (71%) — +0.78
37 1982 1595 108.2 — — — — — +58 — 21.4% -2.21 0–1 0–1 — -0.55 1981 1653 106.8 — — — — +39 — — 26.7% -1.20 0–1 0–3 (0%) — -0.28
38 1983 1586 102.5 — — — — — — — 50.0% +0.75 — — — +0.52 — — — — — — — — — — — — — — — —
Career — 1881 136.9 — — — — +50 +30 -156 55.5% +0.38 53–56 (49%) 34–22 (61%) 101.5 +2.93 — 2196 154.7 — — — — +57 +28 +63 65.9% +1.08 155–88 (64%) 120–88 (58%) 102.9 -3.45

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.