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

Tom Okker vs Sammy Giammalva Jr H2H: 0-1

Sammy Giammalva Jr holds a 1–0 lead over Tom Okker in their ATP head-to-head. Across 1 main-draw meeting, Sammy Giammalva Jr leads 1–0 on hard courts. Most recently, Sammy Giammalva Jr won the 1980 Tel Aviv quarterfinal 4-6 6-4 6-4.

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

Tom Okker
NED Age 82 Right-Handed 177 cm / 5'10"
H2H
0 – 1
1 main-draw meetings
Sammy Giammalva Jr
USA Age 63 Right-Handed

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Sammy Giammalva Jr 4-6 6-4 6-4 Tom Okker Match data Oct 11, 1980* QF Tel Aviv 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
Sammy Giammalva Jr — — — 1,803 — — — 0 0 0 0 2 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 Tom Okker Sammy Giammalva Jr
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
24 1968 89–23 79.5% — 1,793 0 4 — — — — — — —
25 1969 86–25 77.5% — 2,029 0 12 — — — — — — —
26 1970 59–27 68.6% — 1,947 0 17 — — — — — — —
27 1971 74–31 70.5% — 2,012 0 19 — — — — — — —
28 1972 69–31 69.0% — 2,042 0 20 — — — — — — —
29 1973 91–23 79.8% #4 2,171 0 27 — — — — — — —
30 1974 61–18 77.2% #6 2,074 0 30 — — — — — — —
31 1975 39–13 75.0% #11 2,076 0 32 — — — — — — —
32 1976 33–18 64.7% #23 1,962 0 32 — — — — — — —
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 Sammy Giammalva Jr
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 %
17 — — — — — — — — — — — — — — — — — 1980 6 3 9 66.7% 0 1 1 0.0% — — — — — — — —
18 — — — — — — — — — — — — — — — — — 1981 13 8 21 61.9% 8 7 15 53.3% — — — — 2 5 7 28.6%
19 — — — — — — — — — — — — — — — — — 1982 0 3 3 0.0% 1 5 6 16.7% 6 3 9 66.7% 1 4 5 20.0%
20 — — — — — — — — — — — — — — — — — 1983 11 10 21 52.4% 6 5 11 54.5% 2 3 5 40.0% 5 2 7 71.4%
21 — — — — — — — — — — — — — — — — — 1984 8 7 15 53.3% 3 4 7 42.9% 3 2 5 60.0% 1 2 3 33.3%
22 — — — — — — — — — — — — — — — — — 1985 10 8 18 55.6% — — — — 4 4 8 50.0% 4 5 9 44.4%
23 — — — — — — — — — — — — — — — — — 1986 6 8 14 42.9% 3 3 6 50.0% 2 2 4 50.0% 3 4 7 42.9%
24 1968 26 9 35 74.3% 35 7 42 83.3% 20 2 22 90.9% 8 5 13 61.5% 1987 4 8 12 33.3% 2 3 5 40.0% 4 3 7 57.1% 5 5 10 50.0%
25 1969 19 9 28 67.9% 36 6 42 85.7% 14 4 18 77.8% 17 6 23 73.9% 1988 7 8 15 46.7% 2 2 4 50.0% 3 3 6 50.0% 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% 1989 4 5 9 44.4% 0 2 2 0.0% 0 3 3 0.0% 1 0 1 100.0%
27 1971 12 7 19 63.2% 24 10 34 70.6% 13 4 17 76.5% 25 10 35 71.4% — — — — — — — — — — — — — — — — —
28 1972 22 10 32 68.8% 10 5 15 66.7% 2 1 3 66.7% 35 15 50 70.0% — — — — — — — — — — — — — — — — —
29 1973 16 5 21 76.2% 39 8 47 83.0% 4 2 6 66.7% 32 8 40 80.0% — — — — — — — — — — — — — — — — —
30 1974 14 5 19 73.7% 17 6 23 73.9% 6 2 8 75.0% 24 5 29 82.8% — — — — — — — — — — — — — — — — —
31 1975 13 3 16 81.3% 1 3 4 25.0% 10 1 11 90.9% 15 6 21 71.4% — — — — — — — — — — — — — — — — —
32 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 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% — 69 68 137 50.4% 25 32 57 43.9% 24 23 47 51.1% 26 29 55 47.3%

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 Tom Okker Sammy Giammalva Jr
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
17 — — — — — — — — — — — — — — — — 1980 1608 127.7 — — — — +76 — — 50.0% -0.03 3–0 (100%) 1–0 — +0.70
18 — — — — — — — — — — — — — — — — 1981 1672 132.0 — — — — +26 -93 — 50.0% -0.02 15–10 (60%) 8–8 (50%) 103.8 +2.44
19 — — — — — — — — — — — — — — — — 1982 1623 123.4 — — — — -34 -90 +29 41.3% -0.35 4–8 (33%) 3–7 (30%) 94.9 +1.50
20 — — — — — — — — — — — — — — — — 1983 1701 132.6 — — — — -2 -112 -28 53.3% -0.09 7–7 (50%) 8–4 (67%) 103.1 +2.18
21 — — — — — — — — — — — — — — — — 1984 1715 139.4 — — — — -12 -117 +2 47.1% -0.23 6–2 (75%) 3–3 (50%) 105.8 -0.79
22 — — — — — — — — — — — — — — — — 1985 1737 142.0 — — — — +7 — +16 50.6% +0.04 3–2 (60%) 8–3 (73%) 106.1 -0.64
23 — — — — — — — — — — — — — — — — 1986 1740 140.4 — — — — -9 -120 -6 48.8% +0.15 4–6 (40%) 3–1 (75%) 100.4 -1.68
24 1968 1794 133.7 — — — — +101 +27 +106 72.8% +1.68 13–8 (62%) — — +1.39 1987 1644 128.6 — — — — +2 -40 +94 43.4% -0.45 4–4 (50%) 5–6 (45%) 97.9 +0.11
25 1969 2030 149.0 — — — — +67 +67 -72 73.5% +1.60 14–8 (64%) 2–0 — -4.53 1988 1653 124.7 — — — — -2 -43 +53 51.8% +0.13 7–6 (54%) 5–6 (45%) 97.8 +0.72
26 1970 1947 145.1 — — — — -16 +206 +16 66.5% +1.16 8–11 (42%) 7–4 (64%) 95.7 +2.18 1989 1582 113.0 — — — — +68 — +50 35.9% -0.54 2–2 (50%) 0–3 (0%) 96.8 +0.53
27 1971 2013 159.9 — — — — +69 +10 +75 65.3% +1.09 15–11 (58%) 15–22 (41%) 94.4 -6.81 — — — — — — — — — — — — — — — —
28 1972 2043 156.9 — — — — +57 -29 -5 63.5% +1.01 22–10 (69%) 24–19 (56%) 103.7 -5.06 — — — — — — — — — — — — — — — —
29 1973 2171 158.0 — — — — +40 -10 -158 70.9% +1.31 23–7 (77%) 20–10 (67%) 109.7 -4.79 — — — — — — — — — — — — — — — —
30 1974 2074 157.5 — — — — +132 +65 -20 68.6% +0.99 20–3 (87%) 22–8 (73%) 111.7 -4.73 — — — — — — — — — — — — — — — —
31 1975 2076 152.0 — — — — +76 -53 +48 70.1% +1.53 9–4 (69%) 5–2 (71%) 101.0 -1.17 — — — — — — — — — — — — — — — —
32 1976 1963 149.2 — — — — +53 -21 +146 61.5% +0.73 7–4 (64%) 5–4 (56%) 99.4 -1.71 — — — — — — — — — — — — — — — —
33 1977 1936 150.8 — — — — +16 — +174 52.1% +0.08 6–4 (60%) 2–1 (67%) 101.5 -2.95 — — — — — — — — — — — — — — — —
34 1978 1882 150.6 — — — — -30 -29 +247 51.9% +0.15 7–7 (50%) 5–5 (50%) 97.4 -4.63 — — — — — — — — — — — — — — — —
35 1979 1774 131.3 — — — — +9 -16 +387 51.0% +0.03 8–5 (62%) 8–8 (50%) 99.6 0.00 — — — — — — — — — — — — — — — —
36 1980 1717 136.0 — — — — +27 -8 +440 47.5% -0.25 3–5 (38%) 5–2 (71%) 98.7 +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 -3.46 — 1804 139.1 — — — — +8 -94 +29 48.1% -0.11 55–47 (54%) 44–41 (52%) 103.6 +1.72

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.