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

Pieter Aldrich vs Sammy Giammalva Jr H2H: 1-0

Pieter Aldrich holds a 1–0 lead over Sammy Giammalva Jr in their ATP head-to-head. Across 1 main-draw meeting, Pieter Aldrich leads 1–0 on grass. Most recently, Pieter Aldrich won the 1988 Newport round of 16 6-4 3-6 6-3.

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Pieter Aldrich
RSA Age 61 Right-Handed 180 cm / 5'11"
H2H
1 – 0
1 main-draw meetings
Sammy Giammalva Jr
USA Age 63 Right-Handed

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Pieter Aldrich #143 6-4 3-6 6-3 Sammy Giammalva Jr Match data Jul 8, 1988* R16 Newport ATP 250 Grass

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
Pieter Aldrich #1,122 #64 256 1,675 36 40 47.4% 0 0 0 0 1 1
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 Pieter Aldrich Sammy Giammalva Jr
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
20 1986 1–1 50.0% #275 1,512 0 0 — — — — — — —
21 1987 1–1 50.0% #134 1,535 0 0 — — — — — — —
22 1988 15–15 50.0% #68 1,662 0 0 — — — — — — —
23 1989 13–19 40.6% #125 1,619 0 0 — — — — — — —
24 1990 6–4 60.0% #192 1,663 0 1 — — — — — — —

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 Pieter Aldrich 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 1986 1 1 2 50.0% — — — — — — — — — — — — 1983 11 10 21 52.4% 6 5 11 54.5% 2 3 5 40.0% 5 2 7 71.4%
21 1987 1 1 2 50.0% — — — — — — — — — — — — 1984 8 7 15 53.3% 3 4 7 42.9% 3 2 5 60.0% 1 2 3 33.3%
22 1988 11 10 21 52.4% 0 1 1 0.0% 4 4 8 50.0% — — — — 1985 10 8 18 55.6% — — — — 4 4 8 50.0% 4 5 9 44.4%
23 1989 8 11 19 42.1% — — — — 3 4 7 42.9% 2 4 6 33.3% 1986 6 8 14 42.9% 3 3 6 50.0% 2 2 4 50.0% 3 4 7 42.9%
24 1990 0 3 3 0.0% — — — — 5 0 5 100.0% 1 1 2 50.0% 1987 4 8 12 33.3% 2 3 5 40.0% 4 3 7 57.1% 5 5 10 50.0%
25 — — — — — — — — — — — — — — — — — 1988 7 8 15 46.7% 2 2 4 50.0% 3 3 6 50.0% 4 2 6 66.7%
26 — — — — — — — — — — — — — — — — — 1989 4 5 9 44.4% 0 2 2 0.0% 0 3 3 0.0% 1 0 1 100.0%
Career — 21 26 47 44.7% 0 1 1 0.0% 12 8 20 60.0% 3 5 8 37.5% — 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 Pieter Aldrich 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 1986 1513 110.1 — — — — — — — 50.0% +0.17 1–1 — — +0.09 1983 1701 132.6 — — — — -1 -112 -28 53.3% -0.09 7–7 (50%) 8–4 (67%) 103.1 +2.18
21 1987 1536 112.9 — — — — — — — 50.0% -1.00 — — — -0.32 1984 1715 139.4 — — — — -12 -117 +2 47.1% -0.23 6–2 (75%) 3–3 (50%) 105.8 -0.79
22 1988 1662 129.6 — — — — +17 — -56 51.3% -0.08 5–6 (45%) 7–7 (50%) 99.5 +0.62 1985 1737 142.0 — — — — +7 — +16 50.6% +0.04 3–2 (60%) 8–3 (73%) 106.1 -0.64
23 1989 1620 119.5 — — — — +5 — -29 43.3% -0.48 7–7 (50%) 4–4 (50%) 97.9 +0.20 1986 1740 140.4 — — — — -9 -120 -6 48.8% +0.15 4–6 (40%) 3–1 (75%) 100.4 -1.68
24 1990 1664 118.5 — — — — -66 — +47 52.2% +0.04 2–0 2–1 (67%) — +0.37 1987 1644 128.6 — — — — +2 -40 +94 43.4% -0.45 4–4 (50%) 5–6 (45%) 97.9 +0.11
25 — — — — — — — — — — — — — — — — 1988 1653 124.7 — — — — -2 -43 +53 51.8% +0.13 7–6 (54%) 5–6 (45%) 97.8 +0.72
26 — — — — — — — — — — — — — — — — 1989 1582 113.0 — — — — +68 — +50 35.9% -0.54 2–2 (50%) 0–3 (0%) 96.8 +0.53
Career — 1676 127.4 — — — — +3 — -21 47.8% -0.25 15–14 (52%) 13–12 (52%) 101.1 +1.26 — 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.