H2H data updated: 2026-09-12 00:00 UTC

Heinz Gunthardt vs Sammy Giammalva Jr H2H: 1-1

Heinz Gunthardt and Sammy Giammalva Jr are tied 1–1 in their ATP head-to-head. Across 2 main-draw meetings, Heinz Gunthardt leads 1–0 on clay, while Sammy Giammalva Jr leads 1–0 on hard courts. Most recently, Sammy Giammalva Jr won the 1981 US Open round of 128 6-4 4-6 6-3 1-6 6-1.

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Heinz Gunthardt
SUI Age 67 Right-Handed 180 cm / 5'11"
H2H
1 – 1
2 main-draw meetings
Sammy Giammalva Jr
USA Age 63 Right-Handed

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Sammy Giammalva Jr 6-4 4-6 6-3 1-6 6-1 Heinz Gunthardt #47 Match data Sep 3, 1981* R128 US Open Grand Slam Hard
Heinz Gunthardt #44 6-3 6-2 Sammy Giammalva Jr Match data May 7, 1981* R32 Forest Hills Wct 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
Heinz Gunthardt #1,013 #22 0 1,969 225 189 54.3% 0 0 0 0 5 5
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 Heinz Gunthardt Sammy Giammalva Jr
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
17 1976 1–4 20.0% #210 1,496 0 0 — — — — — — —
18 1977 3–6 33.3% #234 1,509 0 0 — — — — — — —
19 1978 25–25 50.0% #55 1,765 0 1 — — — — — — —
20 1979 30–23 56.6% #51 1,815 0 1 — — — — — — —
21 1980 37–21 63.8% #26 1,834 0 4 — — — — — — —
22 1981 28–22 56.0% #38 1,813 0 4 — — — — — — —
23 1982 26–25 51.0% #85 1,722 0 4 — — — — — — —
24 1983 27–15 64.3% #25 1,853 0 5 — — — — — — —
25 1984 23–19 54.8% #31 1,779 0 5 — — — — — — —
26 1985 22–19 53.7% #36 1,820 0 5 — — — — — — —
27 1986 3–9 25.0% #251 1,671 0 5 — — — — — — —
28 1987 0–1 0.0% #954 1,664 0 5 — — — — — — —

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 Heinz Gunthardt 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 1976 0 1 1 0.0% 1 2 3 33.3% — — — — 0 1 1 0.0% 1980 6 3 9 66.7% 0 1 1 0.0% — — — — — — — —
18 1977 0 2 2 0.0% 0 2 2 0.0% 1 1 2 50.0% 2 1 3 66.7% 1981 13 8 21 61.9% 8 7 15 53.3% — — — — 2 5 7 28.6%
19 1978 9 7 16 56.3% 9 12 21 42.9% 1 3 4 25.0% 6 3 9 66.7% 1982 0 3 3 0.0% 1 5 6 16.7% 6 3 9 66.7% 1 4 5 20.0%
20 1979 15 9 24 62.5% 13 8 21 61.9% 1 1 2 50.0% 1 5 6 16.7% 1983 11 10 21 52.4% 6 5 11 54.5% 2 3 5 40.0% 5 2 7 71.4%
21 1980 13 6 19 68.4% 11 5 16 68.8% 2 1 3 66.7% 11 9 20 55.0% 1984 8 7 15 53.3% 3 4 7 42.9% 3 2 5 60.0% 1 2 3 33.3%
22 1981 6 4 10 60.0% 15 10 25 60.0% 0 1 1 0.0% 7 7 14 50.0% 1985 10 8 18 55.6% — — — — 4 4 8 50.0% 4 5 9 44.4%
23 1982 2 3 5 40.0% 16 12 28 57.1% 0 1 1 0.0% 8 9 17 47.1% 1986 6 8 14 42.9% 3 3 6 50.0% 2 2 4 50.0% 3 4 7 42.9%
24 1983 10 4 14 71.4% 17 9 26 65.4% — — — — 0 2 2 0.0% 1987 4 8 12 33.3% 2 3 5 40.0% 4 3 7 57.1% 5 5 10 50.0%
25 1984 7 6 13 53.8% 12 6 18 66.7% 0 1 1 0.0% 4 6 10 40.0% 1988 7 8 15 46.7% 2 2 4 50.0% 3 3 6 50.0% 4 2 6 66.7%
26 1985 9 7 16 56.3% 6 5 11 54.5% 4 1 5 80.0% 3 6 9 33.3% 1989 4 5 9 44.4% 0 2 2 0.0% 0 3 3 0.0% 1 0 1 100.0%
27 1986 0 1 1 0.0% 1 5 6 16.7% 1 1 2 50.0% 1 2 3 33.3% — — — — — — — — — — — — — — — — —
28 1987 0 1 1 0.0% — — — — — — — — — — — — — — — — — — — — — — — — — — — — —
Career — 71 51 122 58.2% 101 76 177 57.1% 10 11 21 47.6% 43 51 94 45.7% — 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 Heinz Gunthardt 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 1976 1497 106.8 — — — — — +44 — 27.3% -2.09 0–1 0–1 — -0.14 1980 1608 127.7 — — — — +76 — — 50.0% -0.03 3–0 (100%) 1–0 — +0.70
18 1977 1510 115.1 — — — — +44 — — 40.0% -0.60 0–2 1–1 — +0.49 1981 1672 132.0 — — — — +26 -93 — 50.0% -0.02 15–10 (60%) 8–8 (50%) 103.8 +2.44
19 1978 1766 146.9 — — — — +3 -145 -225 48.8% -0.21 10–7 (59%) 9–7 (56%) 107.7 -3.10 1982 1623 123.4 — — — — -34 -90 +29 41.3% -0.35 4–8 (33%) 3–7 (30%) 94.9 +1.50
20 1979 1815 145.2 — — — — -9 -69 — 54.6% +0.22 11–8 (58%) 11–6 (65%) 106.3 -1.34 1983 1701 132.6 — — — — -1 -112 -28 53.3% -0.09 7–7 (50%) 8–4 (67%) 103.1 +2.18
21 1980 1835 148.3 — — — — +31 -59 -191 59.5% +0.48 12–8 (60%) 11–5 (69%) 105.9 -2.27 1984 1715 139.4 — — — — -12 -117 +2 47.1% -0.23 6–2 (75%) 3–3 (50%) 105.8 -0.79
22 1981 1813 148.5 — — — — -9 +4 — 53.1% +0.19 8–4 (67%) 8–6 (57%) 106.5 -2.56 1985 1737 142.0 — — — — +7 — +16 50.6% +0.04 3–2 (60%) 8–3 (73%) 106.1 -0.64
23 1982 1722 150.4 — — — — +6 +108 — 50.0% +0.01 5–3 (63%) 8–8 (50%) 100.4 -3.00 1986 1740 140.4 — — — — -9 -120 -6 48.8% +0.15 4–6 (40%) 3–1 (75%) 100.4 -1.68
24 1983 1853 151.4 — — — — -33 0 — 59.8% +0.76 10–9 (53%) 5–9 (36%) 96.3 -0.24 1987 1644 128.6 — — — — +2 -40 +94 43.4% -0.45 4–4 (50%) 5–6 (45%) 97.9 +0.11
25 1984 1779 140.1 — — — — -19 +104 — 50.5% +0.08 9–3 (75%) 10–13 (43%) 103.8 -0.50 1988 1653 124.7 — — — — -2 -43 +53 51.8% +0.13 7–6 (54%) 5–6 (45%) 97.8 +0.72
26 1985 1820 135.6 — — — — -43 -26 -105 50.0% +0.11 11–6 (65%) 6–11 (35%) 100.8 0.00 1989 1582 113.0 — — — — +68 — +50 35.9% -0.54 2–2 (50%) 0–3 (0%) 96.8 +0.53
27 1986 1672 117.2 — — — — +63 +23 — 38.2% -0.35 0–4 (0%) 2–7 (22%) 88.0 +0.03 — — — — — — — — — — — — — — — —
28 1987 1665 110.5 — — — — — — — 33.3% -0.67 0–1 — — -0.32 — — — — — — — — — — — — — — — —
Career — 1969 150.7 — — — — -3 -3 -167 52.3% +0.15 76–56 (58%) 71–74 (49%) 103.5 -3.13 — 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.