H2H data updated: 2026-09-08 00:00 UTC

Todd Nelson vs Sammy Giammalva Jr H2H: 1-0

Todd Nelson holds a 1–0 lead over Sammy Giammalva Jr in their ATP head-to-head. Across 1 main-draw meeting, Todd Nelson leads 1–0 on hard courts. Most recently, Todd Nelson won the 1983 Japan Open round of 32 6-2 6-3.

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Todd Nelson
USA Age 65 Right-Handed 185 cm / 6'1"
H2H
1 – 0
1 main-draw meetings
Sammy Giammalva Jr
USA Age 63 Right-Handed

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Todd Nelson 6-2 6-3 Sammy Giammalva Jr Match data Oct 20, 1983* R32 Japan 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
Todd Nelson #1,179 #58 156 1,650 53 90 37.1% 0 0 0 0 0 0
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 Todd Nelson Sammy Giammalva Jr
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
22 1983 4–5 44.4% #423 1,528 0 0 — — — — — — —
23 1984 10–12 45.5% #97 1,602 0 0 — — — — — — —
24 1985 7–15 31.8% #161 1,565 0 0 — — — — — — —
25 1986 8–15 34.8% #117 1,565 0 0 — — — — — — —
26 1987 9–12 42.9% #112 1,575 0 0 — — — — — — —
27 1988 11–19 36.7% #122 1,563 0 0 — — — — — — —
28 1989 0–3 0.0% #486 1,520 0 0 — — — — — — —
29 1990 0–2 0.0% #485 1,506 0 0 — — — — — — —
30 1991 2–3 40.0% #273 1,514 0 0 — — — — — — —
31 1992 0–1 0.0% #302 1,503 0 0 — — — — — — —
32 1993 2–3 40.0% #255 1,505 0 0 — — — — — — —

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 Todd Nelson 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 1983 2 4 6 33.3% — — — — 2 1 3 66.7% — — — — 1985 10 8 18 55.6% — — — — 4 4 8 50.0% 4 5 9 44.4%
23 1984 6 8 14 42.9% 2 2 4 50.0% 0 1 1 0.0% 2 1 3 66.7% 1986 6 8 14 42.9% 3 3 6 50.0% 2 2 4 50.0% 3 4 7 42.9%
24 1985 3 4 7 42.9% 0 2 2 0.0% 2 4 6 33.3% 2 5 7 28.6% 1987 4 8 12 33.3% 2 3 5 40.0% 4 3 7 57.1% 5 5 10 50.0%
25 1986 2 8 10 20.0% 1 1 2 50.0% 2 3 5 40.0% 3 3 6 50.0% 1988 7 8 15 46.7% 2 2 4 50.0% 3 3 6 50.0% 4 2 6 66.7%
26 1987 0 3 3 0.0% 0 2 2 0.0% 1 3 4 25.0% 8 4 12 66.7% 1989 4 5 9 44.4% 0 2 2 0.0% 0 3 3 0.0% 1 0 1 100.0%
27 1988 7 11 18 38.9% — — — — 0 3 3 0.0% 4 5 9 44.4% — — — — — — — — — — — — — — — — —
28 1989 0 2 2 0.0% — — — — — — — — 0 1 1 0.0% — — — — — — — — — — — — — — — — —
29 1990 0 1 1 0.0% — — — — — — — — 0 1 1 0.0% — — — — — — — — — — — — — — — — —
30 1991 1 2 3 33.3% — — — — 1 1 2 50.0% — — — — — — — — — — — — — — — — — — — — —
31 1992 0 1 1 0.0% — — — — — — — — — — — — — — — — — — — — — — — — — — — — —
32 1993 1 2 3 33.3% — — — — 1 1 2 50.0% — — — — — — — — — — — — — — — — — — — — —
Career — 22 46 68 32.4% 3 7 10 30.0% 9 17 26 34.6% 19 20 39 48.7% — 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 Todd Nelson 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 — — — — -32 -90 +29 41.3% -0.35 4–8 (33%) 3–7 (30%) 94.9 +1.50
20 — — — — — — — — — — — — — — — — 1983 1701 132.6 — — — — -1 -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 1983 1529 119.1 — — — — +2 — +81 47.6% +0.05 0–1 2–0 — +0.32 1985 1737 142.0 — — — — +7 — +16 50.6% +0.04 3–2 (60%) 8–3 (73%) 106.1 -0.64
23 1984 1602 120.6 — — — — -5 -43 — 47.4% -0.21 4–5 (44%) 6–5 (55%) 100.8 +1.29 1986 1740 140.4 — — — — -9 -120 -6 48.8% +0.15 4–6 (40%) 3–1 (75%) 100.4 -1.68
24 1985 1566 122.4 — — — — +31 — +19 40.3% -0.61 2–6 (25%) 6–9 (40%) 94.2 +0.78 1987 1644 128.6 — — — — +2 -40 +94 43.4% -0.45 4–4 (50%) 5–6 (45%) 97.9 +0.11
25 1986 1565 134.9 — — — — +9 — +12 37.7% -0.70 4–4 (50%) 5–7 (42%) 101.2 -0.43 1988 1653 124.7 — — — — -2 -43 +53 51.8% +0.13 7–6 (54%) 5–6 (45%) 97.8 +0.72
26 1987 1575 132.2 — — — — +42 — -8 50.0% +0.07 1–7 (13%) 6–5 (55%) 96.1 +1.45 1989 1582 113.0 — — — — +68 — +50 35.9% -0.54 2–2 (50%) 0–3 (0%) 96.8 +0.53
27 1988 1564 133.6 — — — — +52 — -56 39.2% -0.70 4–5 (44%) 4–6 (40%) 99.1 -0.85 — — — — — — — — — — — — — — — —
28 1989 1520 99.2 — — — — +44 — — 14.3% -1.43 0–1 0–2 — +0.26 — — — — — — — — — — — — — — — —
29 1990 1507 110.1 — — — — — — — 33.3% -0.50 0–2 — — -0.14 — — — — — — — — — — — — — — — —
30 1991 1514 111.4 -1.52 -0.18 0.816 47.2% +43 — — 42.9% -0.71 2–2 (50%) 1–1 — +0.24 — — — — — — — — — — — — — — — —
31 1992 1504 104.3 -0.63 +1.44 0.846 45.8% — — — 0.0% -1.33 — 0–2 — -0.06 — — — — — — — — — — — — — — — —
32 1993 1506 108.4 +0.32 +1.18 1.039 50.4% +33 — — 35.7% -0.57 1–0 0–2 — +0.53 — — — — — — — — — — — — — — — —
Career — 1651 134.5 -0.70 +0.53 0.904 48.3% +28 -43 +10 41.7% -0.46 18–33 (35%) 30–39 (43%) 93.7 +2.37 — 1804 139.2 — — — — +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.