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

Butch Walts vs Sammy Giammalva Jr H2H: 1-0

Butch Walts holds a 1–0 lead over Sammy Giammalva Jr in their ATP head-to-head. Across 1 main-draw meeting, Butch Walts leads 1–0 on hard courts. Most recently, Butch Walts won the 1981 Tampa quarterfinal 4-6 6-3 6-2.

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Butch Walts
USA Age 71 Right-Handed 193 cm / 6'4"
H2H
1 – 0
1 main-draw meetings
Sammy Giammalva Jr
USA Age 63 Right-Handed

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Butch Walts #54 4-6 6-3 6-2 Sammy Giammalva Jr Match data Mar 14, 1981* QF Tampa 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
Butch Walts #755 #30 0 1,915 140 135 50.9% 0 0 0 0 4 4
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 Butch Walts Sammy Giammalva Jr
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
20 1975 0–3 0.0% #396 1,482 0 0 — — — — — — —
21 1976 16–13 55.2% #79 1,667 0 1 — — — — — — —
22 1977 21–19 52.5% #50 1,760 0 2 — — — — — — —
23 1978 13–20 39.4% #116 1,661 0 2 — — — — — — —
24 1979 40–22 64.5% #39 1,870 0 4 — — — — — — —
25 1980 22–23 48.9% #47 1,808 0 4 — — — — — — —
26 1981 15–17 46.9% #85 1,707 0 4 — — — — — — —
27 1982 3–5 37.5% #99 1,681 0 4 — — — — — — —
28 1983 9–10 47.4% #473 1,679 0 4 — — — — — — —
29 1984 1–3 25.0% #311 1,658 0 4 — — — — — — —

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 Butch Walts 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 1975 — — — — 0 2 2 0.0% — — — — 0 1 1 0.0% 1983 11 10 21 52.4% 6 5 11 54.5% 2 3 5 40.0% 5 2 7 71.4%
21 1976 9 6 15 60.0% 0 1 1 0.0% 0 1 1 0.0% 7 5 12 58.3% 1984 8 7 15 53.3% 3 4 7 42.9% 3 2 5 60.0% 1 2 3 33.3%
22 1977 2 6 8 25.0% 4 4 8 50.0% 7 4 11 63.6% 8 5 13 61.5% 1985 10 8 18 55.6% — — — — 4 4 8 50.0% 4 5 9 44.4%
23 1978 9 6 15 60.0% 2 3 5 40.0% — — — — 2 11 13 15.4% 1986 6 8 14 42.9% 3 3 6 50.0% 2 2 4 50.0% 3 4 7 42.9%
24 1979 19 11 30 63.3% 3 5 8 37.5% — — — — 18 6 24 75.0% 1987 4 8 12 33.3% 2 3 5 40.0% 4 3 7 57.1% 5 5 10 50.0%
25 1980 9 6 15 60.0% 1 2 3 33.3% 2 3 5 40.0% 10 12 22 45.5% 1988 7 8 15 46.7% 2 2 4 50.0% 3 3 6 50.0% 4 2 6 66.7%
26 1981 5 5 10 50.0% 3 2 5 60.0% 0 2 2 0.0% 7 8 15 46.7% 1989 4 5 9 44.4% 0 2 2 0.0% 0 3 3 0.0% 1 0 1 100.0%
27 1982 1 4 5 20.0% — — — — — — — — 2 1 3 66.7% — — — — — — — — — — — — — — — — —
28 1983 2 5 7 28.6% — — — — 0 1 1 0.0% 7 4 11 63.6% — — — — — — — — — — — — — — — — —
29 1984 0 1 1 0.0% 0 1 1 0.0% — — — — 1 1 2 50.0% — — — — — — — — — — — — — — — — —
Career — 56 50 106 52.8% 13 20 33 39.4% 9 11 20 45.0% 62 54 116 53.4% — 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 Butch Walts 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 1975 1483 98.8 — — — — — — — 0.0% -3.75 — — — 0.00 1983 1701 132.6 — — — — -2 -112 -28 53.3% -0.09 7–7 (50%) 8–4 (67%) 103.1 +2.18
21 1976 1667 134.5 — — — — +67 — — 52.9% -0.10 6–3 (67%) 6–6 (50%) 103.8 +0.37 1984 1715 139.4 — — — — -12 -117 +2 47.1% -0.23 6–2 (75%) 3–3 (50%) 105.8 -0.79
22 1977 1760 136.6 — — — — +14 -163 -178 51.5% -0.20 7–7 (50%) 10–3 (77%) 107.2 +0.09 1985 1737 142.0 — — — — +7 — +16 50.6% +0.04 3–2 (60%) 8–3 (73%) 106.1 -0.64
23 1978 1661 120.5 — — — — +38 -90 — 41.0% -0.82 4–5 (44%) 6–7 (46%) 100.5 +2.44 1986 1740 140.4 — — — — -9 -120 -6 48.8% +0.15 4–6 (40%) 3–1 (75%) 100.4 -1.68
24 1979 1871 154.6 — — — — +72 -274 — 60.0% +0.68 15–7 (68%) 14–10 (58%) 108.8 +0.43 1987 1644 128.6 — — — — +2 -40 +94 43.4% -0.45 4–4 (50%) 5–6 (45%) 97.9 +0.11
25 1980 1808 150.4 — — — — +41 -210 -193 49.5% -0.08 4–7 (36%) 8–8 (50%) 94.4 -4.84 1988 1653 124.7 — — — — -2 -43 +53 51.8% +0.13 7–6 (54%) 5–6 (45%) 97.8 +0.72
26 1981 1707 135.1 — — — — +46 -81 — 46.3% -0.18 7–7 (50%) 9–10 (47%) 94.3 +0.04 1989 1582 113.0 — — — — +68 — +50 35.9% -0.54 2–2 (50%) 0–3 (0%) 96.8 +0.53
27 1982 1681 118.9 — — — — +34 — — 36.8% -1.16 1–0 1–0 — -0.15 — — — — — — — — — — — — — — — —
28 1983 1680 127.1 — — — — +24 — — 45.7% -0.04 5–3 (63%) 3–4 (43%) 103.7 +0.79 — — — — — — — — — — — — — — — —
29 1984 1659 107.4 — — — — +24 — — 33.3% -1.22 0–1 1–1 — -0.15 — — — — — — — — — — — — — — — —
Career — 1915 145.5 — — — — +48 -172 -183 50.0% -0.09 49–40 (55%) 58–49 (54%) 105.5 -0.36 — 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.