H2H data updated: 2026-09-01 00:00 UTC

Thomaz Koch vs Clark Graebner H2H: 3-5

Clark Graebner holds a 5–3 lead over Thomaz Koch in their ATP head-to-head. Across 8 main-draw meetings, they are tied 2–2 on hard courts, while they are tied 1–1 on carpet. Most recently, Clark Graebner won the 1972 Bristol round of 16 6-1 4-6 7-5.

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Thomaz Koch
BRA Age 81 Left-Handed
H2H
3 – 5
8 main draw meetings
Clark Graebner
USA Age 82 Right-Handed 188 cm / 6'2"

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Clark Graebner 6-1 4-6 7-5 Thomaz Koch Match data Jun 21, 1972* R16 Bristol ATP 250 Grass
Clark Graebner 6-2 6-0 6-2 Thomaz Koch Match data May 26, 1972* R64 Roland Garros Grand Slam Clay
Clark Graebner 6-2 3-6 7-5 Thomaz Koch Match data Mar 6, 1971* QF Macon ATP 250 Hard
Thomaz Koch 6-3 6-1 Clark Graebner Match data Oct 2, 1970* R16 Berkeley ATP 250 Hard
Thomaz Koch 4-6 10-8 4-6 6-3 6-3 Clark Graebner Match data Mar 7, 1970* SF Hampton ATP 250 Carpet
Thomaz Koch 9-7 6-1 Clark Graebner Match data Feb 2, 1970* QF Omaha ATP 250 Hard
Clark Graebner 6-3 10-12 9-7 Thomaz Koch Match data Feb 6, 1969* F Richmond ATP 250 Carpet
Clark Graebner 6-8 6-2 6-1 Thomaz Koch Match data Jan 13, 1968* QF Bloemfontein 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
Thomaz Koch #857 #24 0 1,880 199 157 55.9% 0 0 0 0 6 6
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 Thomaz Koch Clark Graebner
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 74–22 77.1% — 1,818 0 2
25 1970 18–15 54.5% — 1,804 0 4 1969 49–14 77.8% — 1,840 0 6
26 1971 24–13 64.9% — 1,747 0 5 1970 58–28 67.4% — 1,840 0 8
27 1972 19–17 52.8% — 1,706 0 6 1971 75–29 72.1% — 1,868 0 11
28 1973 5–6 45.5% #204 1,698 0 6 1972 33–22 60.0% — 1,811 0 11
29 1974 22–12 64.7% #24 1,863 0 6 1973 34–19 64.2% #48 1,770 0 12
30 1975 19–21 47.5% #62 1,768 0 6 1974 11–13 45.8% #99 1,693 0 12
31 1976 15–8 65.2% #58 1,815 0 6 1975 8–11 42.1% #120 1,583 0 12
32 1977 1–6 14.3% #94 1,715 0 6 1976 0–3 0.0% #199 1,540 0 12
34 1979 4–7 36.4% #85 1,665 0 6 — — — — — — —
35 1980 7–9 43.8% #49 1,654 0 6 — — — — — — —
36 1981 0–2 0.0% #90 1,630 0 6 — — — — — — —
37 1982 1–5 16.7% — 1,594 0 6 — — — — — — —
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 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 %
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 30 11 41 73.2% 9 3 12 75.0% 28 6 34 82.4% 7 2 9 77.8%
25 1970 12 7 19 63.2% — — — — 1 2 3 33.3% 5 6 11 45.5% 1969 13 2 15 86.7% 10 4 14 71.4% 22 6 28 78.6% 4 2 6 66.7%
26 1971 6 4 10 60.0% 6 3 9 66.7% 5 3 8 62.5% 7 3 10 70.0% 1970 15 11 26 57.7% 22 6 28 78.6% 12 3 15 80.0% 9 8 17 52.9%
27 1972 4 5 9 44.4% 2 4 6 33.3% 7 3 10 70.0% 6 5 11 54.5% 1971 36 9 45 80.0% 19 7 26 73.1% 14 5 19 73.7% 6 8 14 42.9%
28 1973 4 4 8 50.0% 1 1 2 50.0% 0 1 1 0.0% — — — — 1972 17 10 27 63.0% 2 2 4 50.0% 9 4 13 69.2% 5 6 11 45.5%
29 1974 4 2 6 66.7% 12 7 19 63.2% 3 2 5 60.0% 3 1 4 75.0% 1973 18 8 26 69.2% 5 4 9 55.6% 3 3 6 50.0% 8 4 12 66.7%
30 1975 1 4 5 20.0% 12 11 23 52.2% 0 2 2 0.0% 6 4 10 60.0% 1974 2 4 6 33.3% 4 4 8 50.0% 2 2 4 50.0% 3 3 6 50.0%
31 1976 3 1 4 75.0% 4 4 8 50.0% — — — — 8 3 11 72.7% 1975 0 1 1 0.0% 3 4 7 42.9% — — — — 5 6 11 45.5%
32 1977 0 2 2 0.0% 1 1 2 50.0% 0 1 1 0.0% 0 2 2 0.0% 1976 0 1 1 0.0% — — — — — — — — 0 2 2 0.0%
34 1979 1 3 4 25.0% 3 4 7 42.9% — — — — — — — — — — — — — — — — — — — — — — — — —
35 1980 0 1 1 0.0% 3 4 7 42.9% 1 3 4 25.0% 3 1 4 75.0% — — — — — — — — — — — — — — — — —
36 1981 0 1 1 0.0% 0 1 1 0.0% — — — — — — — — — — — — — — — — — — — — — — — — —
37 1982 — — — — 1 3 4 25.0% — — — — 0 2 2 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% — 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 Thomaz Koch 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
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 1819 133.7 — — — — +90 -116 +78 73.3% +1.64 10–8 (56%) — — +0.49
25 1970 1804 127.6 — — — — +60 — — 53.9% +0.49 9–1 (90%) 0–2 — +1.66 1969 1841 131.4 — — — — +153 -98 +107 71.5% +1.35 8–5 (62%) 1–0 — +5.30
26 1971 1748 129.9 — — — — +105 +80 -167 65.2% +0.90 3–6 (33%) 7–0 (100%) — +4.08 1970 1841 135.3 — — — — -21 +68 +150 62.4% +0.83 17–8 (68%) 4–2 (67%) — +2.59
27 1972 1706 128.0 — — — — +63 +56 -87 50.6% +0.08 3–6 (33%) 5–6 (45%) — +1.16 1971 1868 141.1 — — — — +44 +29 +136 65.4% +1.01 21–7 (75%) 17–15 (53%) — +5.35
28 1973 1698 118.0 — — — — +46 — — 52.0% -0.12 1–2 (33%) 3–0 (100%) — -0.13 1972 1811 136.3 — — — — +27 +71 +133 58.0% +0.62 5–8 (38%) 6–4 (60%) — +3.04
29 1974 1863 142.6 — — — — -34 -6 -203 61.5% +0.43 5–5 (50%) 7–2 (78%) — -2.09 1973 1770 134.1 — — — — +58 +80 +109 62.2% +0.84 6–5 (55%) 9–9 (50%) — +3.67
30 1975 1769 140.3 — — — — +80 +16 — 49.5% +0.08 9–8 (53%) 4–5 (44%) — -1.45 1974 1693 114.0 — — — — +41 +100 +143 46.2% -0.38 6–5 (55%) 3–4 (43%) — +1.75
31 1976 1816 127.2 — — — — +53 -51 — 60.7% +0.64 5–2 (71%) 3–3 (50%) — +3.43 1975 1584 111.5 — — — — +73 +121 — 52.4% -0.05 0–5 (0%) 6–3 (67%) — +3.44
32 1977 1715 108.6 — — — — +35 — — 31.8% -1.27 1–3 (25%) 1–1 — +0.02 1976 1541 91.6 — — — — +44 — — 0.0% -3.83 — — — +0.51
34 1979 1665 115.2 — — — — +30 +52 — 42.3% -0.85 1–3 (25%) 1–0 — +0.07 — — — — — — — — — — — — — — — —
35 1980 1654 135.1 — — — — +61 +52 -47 46.3% -0.24 1–3 (25%) 3–2 (60%) — -0.22 — — — — — — — — — — — — — — — —
36 1981 1630 99.5 — — — — — — — 0.0% -2.75 — — — -0.20 — — — — — — — — — — — — — — — —
37 1982 1595 108.2 — — — — — +58 — 21.4% -2.21 0–1 0–1 — -0.55 — — — — — — — — — — — — — — — —
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 — 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.