H2H data updated: 2026-09-04 00:00 UTC

Clark Graebner vs Toshiro Sakai H2H: 1-0

Clark Graebner holds a 1–0 lead over Toshiro Sakai in their ATP head-to-head. Across 1 main-draw meeting, Clark Graebner leads 1–0 on clay. Most recently, Clark Graebner won the 1971 Austrian Open Kitzbühel round of 32 6-2 6-4 6-3.

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Clark Graebner
USA Age 82 Right-Handed 188 cm / 6'2"
H2H
1 – 0
1 main draw meetings
Toshiro Sakai
JPN Age 78 Right-Handed

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Clark Graebner 6-2 6-4 6-3 Toshiro Sakai Match data Jul 22, 1971* R32 Austrian Open Kitzbühel ATP 250 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
Clark Graebner #199 #45 0 2,014 342 161 68.0% 0 0 0 0 12 12
Toshiro Sakai — — — 1,644 — — — 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 Toshiro Sakai
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 58–28 67.4% — 1,840 0 8 — — — — — — —
27 1971 75–29 72.1% — 1,868 0 11 — — — — — — —
28 1972 33–22 60.0% — 1,811 0 11 — — — — — — —
29 1973 34–19 64.2% #48 1,770 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 Toshiro Sakai
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 %
20 — — — — — — — — — — — — — — — — — 1968 — — — — — — — — 1 2 3 33.3% — — — —
21 — — — — — — — — — — — — — — — — — 1969 — — — — — — — — 0 1 1 0.0% — — — —
23 — — — — — — — — — — — — — — — — — 1971 0 1 1 0.0% 0 3 3 0.0% 3 3 6 50.0% — — — —
24 1968 30 11 41 73.2% 9 3 12 75.0% 28 6 34 82.4% 7 2 9 77.8% 1972 1 1 2 50.0% 4 4 8 50.0% 2 3 5 40.0% — — — —
25 1969 13 2 15 86.7% 10 4 14 71.4% 22 6 28 78.6% 4 2 6 66.7% 1973 2 2 4 50.0% 3 8 11 27.3% 3 2 5 60.0% — — — —
26 1970 15 11 26 57.7% 22 6 28 78.6% 12 3 15 80.0% 9 8 17 52.9% 1974 0 1 1 0.0% 2 3 5 40.0% 0 1 1 0.0% — — — —
27 1971 36 9 45 80.0% 19 7 26 73.1% 14 5 19 73.7% 6 8 14 42.9% 1975 — — — — 0 3 3 0.0% 0 1 1 0.0% 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% — — — — — — — — — — — — — — — — —
29 1973 18 8 26 69.2% 5 4 9 55.6% 3 3 6 50.0% 8 4 12 66.7% — — — — — — — — — — — — — — — — —
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% — — — — — — — — — — — — — — — — —
32 1976 0 1 1 0.0% — — — — — — — — 0 2 2 0.0% — — — — — — — — — — — — — — — — —
37 — — — — — — — — — — — — — — — — — 1985 0 1 1 0.0% — — — — — — — — — — — —
Career — 131 57 188 69.7% 74 34 108 68.5% 90 29 119 75.6% 47 41 88 53.4% — 3 6 9 33.3% 9 21 30 30.0% 9 13 22 40.9% 0 1 1 0.0%

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 Clark Graebner Toshiro Sakai
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
20 — — — — — — — — — — — — — — — — 1968 1475 92.9 — — — — — — +7 27.3% -1.91 1–0 — — +0.35
21 — — — — — — — — — — — — — — — — 1969 1467 101.7 — — — — — — — 0.0% -2.00 — — — -0.09
23 — — — — — — — — — — — — — — — — 1971 1485 106.1 — — — — — -13 +78 31.3% -1.50 1–0 1–2 (33%) — +0.49
24 1968 1819 133.7 — — — — +90 -116 +78 73.3% +1.64 10–8 (56%) — — +0.49 1972 1529 106.2 — — — — — -10 +21 51.2% +0.07 1–3 (25%) 1–2 (33%) — +1.79
25 1969 1841 131.4 — — — — +153 -98 +107 71.5% +1.35 8–5 (62%) 1–0 — +5.30 1973 1604 120.0 — — — — -14 -103 +2 40.4% -0.50 3–3 (50%) 1–4 (20%) — +0.19
26 1970 1841 135.3 — — — — -21 +68 +150 62.4% +0.83 17–8 (68%) 4–2 (67%) — +2.59 1974 1578 106.7 — — — — — -73 — 35.0% -1.00 0–2 1–0 — +0.35
27 1971 1868 141.1 — — — — +44 +29 +136 65.4% +1.01 21–7 (75%) 17–15 (53%) — +5.35 1975 1496 93.2 — — — — — -27 — 15.4% -2.54 0–1 1–0 — +0.71
28 1972 1811 136.3 — — — — +27 +71 +133 58.0% +0.62 5–8 (38%) 6–4 (60%) — +3.04 — — — — — — — — — — — — — — — —
29 1973 1770 134.1 — — — — +58 +80 +109 62.2% +0.84 6–5 (55%) 9–9 (50%) — +3.67 — — — — — — — — — — — — — — — —
30 1974 1693 114.0 — — — — +41 +100 +143 46.2% -0.38 6–5 (55%) 3–4 (43%) — +1.75 — — — — — — — — — — — — — — — —
31 1975 1584 111.5 — — — — +73 +121 — 52.4% -0.05 0–5 (0%) 6–3 (67%) — +3.44 — — — — — — — — — — — — — — — —
32 1976 1541 91.6 — — — — +44 — — 0.0% -3.83 — — — +0.51 — — — — — — — — — — — — — — — —
37 — — — — — — — — — — — — — — — — 1985 1487 97.5 — — — — — — — 0.0% -4.00 — — — -0.03
Career — 2015 136.6 — — — — +51 +24 +113 64.3% +0.96 73–51 (59%) 46–37 (55%) 100.5 +5.29 — 1645 109.7 — — — — -14 -57 +32 37.0% -0.91 6–9 (40%) 5–8 (38%) 97.2 +6.06

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.