H2H data updated: 2026-10-19 00:00 UTC

Clark Graebner vs Keith Carpenter H2H: 1-0

Clark Graebner holds a 1–0 lead over Keith Carpenter in their ATP head-to-head. Across 1 main-draw meeting, Clark Graebner leads 1–0 on hard courts. Most recently, Clark Graebner won the 1968 South African Open round of 32 6-4 6-1 7-5.

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

Clark Graebner
USA Age 82 Right-Handed 188 cm / 6'2"
H2H
1 – 0
1 main-draw meetings
Keith Carpenter
CAN Age 85 Right-Handed

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Clark Graebner 6-4 6-1 7-5 Keith Carpenter Match data Apr 4, 1968* R32 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
Clark Graebner #199 #45 0 2,013 339 160 67.9% 0 0 0 0 12 12
Keith Carpenter — — — 1,510 — — — 0 0 0 0 0 0

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 Clark Graebner Keith Carpenter
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
24 1968 74–22 77.1% — 1,818 0 2 — — — — — — —
25 1969 49–14 77.8% — 1,840 0 6 — — — — — — —
26 1970 55–27 67.1% — 1,838 0 8 — — — — — — —
27 1971 75–29 72.1% — 1,867 0 11 — — — — — — —
28 1972 33–22 60.0% — 1,811 0 11 — — — — — — —
29 1973 34–19 64.2% #48 1,769 0 12 — — — — — — —
30 1974 11–13 45.8% #99 1,693 0 12 — — — — — — —
31 1975 8–11 42.1% #120 1,583 0 12 — — — — — — —
32 1976 0–3 0.0% #199 1,540 0 12 — — — — — — —

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 Clark Graebner Keith Carpenter
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 30 11 41 73.2% 9 3 12 75.0% 28 6 34 82.4% 7 2 9 77.8% — — — — — — — — — — — — — — — — —
25 1969 13 2 15 86.7% 10 4 14 71.4% 22 6 28 78.6% 4 2 6 66.7% — — — — — — — — — — — — — — — — —
26 1970 15 11 26 57.7% 19 5 24 79.2% 12 3 15 80.0% 9 8 17 52.9% 1968 0 1 1 0.0% 1 0 1 100.0% 1 2 3 33.3% — — — —
27 1971 36 9 45 80.0% 19 7 26 73.1% 14 5 19 73.7% 6 8 14 42.9% 1969 — — — — — — — — 0 1 1 0.0% — — — —
28 1972 17 10 27 63.0% 2 2 4 50.0% 9 4 13 69.2% 5 6 11 45.5% 1970 — — — — 0 1 1 0.0% — — — — — — — —
29 1973 18 8 26 69.2% 5 4 9 55.6% 3 3 6 50.0% 8 4 12 66.7% 1971 — — — — 0 1 1 0.0% — — — — — — — —
30 1974 2 4 6 33.3% 4 4 8 50.0% 2 2 4 50.0% 3 3 6 50.0% — — — — — — — — — — — — — — — — —
31 1975 0 1 1 0.0% 3 4 7 42.9% — — — — 5 6 11 45.5% 1973 — — — — 0 1 1 0.0% — — — — 0 2 2 0.0%
32 1976 0 1 1 0.0% — — — — — — — — 0 2 2 0.0% 1974 — — — — — — — — — — — — 0 1 1 0.0%
34 — — — — — — — — — — — — — — — — — 1976 0 1 1 0.0% — — — — — — — — — — — —
Career — 131 57 188 69.7% 71 33 104 68.3% 90 29 119 75.6% 47 41 88 53.4% — 0 2 2 0.0% 1 3 4 25.0% 1 3 4 25.0% 0 3 3 0.0%

Advanced Statistics Comparison by Age

Seasons are aligned by the age each player spent most of that calendar year. Metrics use eligible main-draw results; point statistics use matches with detailed data. 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 Clark Graebner Keith Carpenter
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 1819 133.7 — — — — +90 -116 +78 73.3% +1.64 10–8 (56%) — — +0.48 — — — — — — — — — — — — — — — —
25 1969 1841 131.4 — — — — +152 -98 +107 71.5% +1.35 8–5 (62%) 1–0 — +5.30 — — — — — — — — — — — — — — — —
26 1970 1838 134.4 — — — — -19 +57 +151 62.2% +0.83 16–8 (67%) 4–2 (67%) 105.2 +2.72 1968 1510 100.1 — — — — — — -11 35.7% -1.21 1–0 — — -0.27
27 1971 1868 141.1 — — — — +44 +24 +135 65.4% +1.01 21–7 (75%) 17–15 (53%) 106.8 +5.39 1969 1502 104.3 — — — — — — — 0.0% -2.33 — — — -0.18
28 1972 1811 136.3 — — — — +26 +67 +132 58.0% +0.62 5–8 (38%) 6–4 (60%) 93.8 +3.02 1970 1497 99.9 — — — — — — — 0.0% -4.00 — — — -0.07
29 1973 1770 134.0 — — — — +58 +77 +109 62.2% +0.84 6–5 (55%) 9–9 (50%) 98.1 +3.71 1971 1496 105.7 — — — — — — — 0.0% -4.00 — — — -0.26
30 1974 1693 113.9 — — — — +41 +97 +143 46.2% -0.38 6–5 (55%) 3–4 (43%) 97.5 +1.74 — — — — — — — — — — — — — — — —
31 1975 1583 111.5 — — — — +72 +119 — 52.4% -0.05 0–5 (0%) 6–3 (67%) 94.0 +3.44 1973 1474 104.4 — — — — — — — 0.0% -3.33 — — — +0.04
32 1976 1540 91.6 — — — — +45 — — 0.0% -3.83 — — — +0.51 1974 1474 106.3 — — — — — — — 0.0% -5.00 — — — -0.22
34 — — — — — — — — — — — — — — — — 1976 1461 95.4 — — — — — — — 0.0% -2.00 — 0–1 — +0.16
Career — 2014 136.4 — — — — +51 +17 +113 64.3% +0.96 72–51 (59%) 46–37 (55%) 100.2 +5.37 — 1510 105.6 — — — — — — -11 16.1% -2.38 1–0 0–1 — -6.15

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.