H2H data updated: 2026-09-08 00:00 UTC
Sammy Giammalva Jr holds a 3–1 lead over John Alexander in their ATP head-to-head. Across 4 main-draw meetings, Sammy Giammalva Jr leads 2–1 on grass and 1–0 on hard courts. Most recently, Sammy Giammalva Jr won the 1983 Queen's Club Championships round of 64 4-6 7-6 7-5.
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| Player | Score | Player | Match Data | Date | Round | Tournament | Category | Surface |
|---|---|---|---|---|---|---|---|---|
| Sammy Giammalva Jr | 4-6 7-6 7-5 | John Alexander | Match data | Jun 8, 1983* | R64 | Queen's Club Championships | ATP 250 | Grass |
| John Alexander | 6-3 6-2 | Sammy Giammalva Jr | Match data | Dec 18, 1982* | SF | Sydney International | ATP 250 | Grass |
| Sammy Giammalva Jr | 4-6 7-6 6-1 | John Alexander | Match data | Dec 11, 1982* | R16 | Australian Open | Grand Slam | Grass |
| Sammy Giammalva Jr | 6-2 7-6 | John Alexander | Match data | Mar 13, 1981* | R16 | 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.
| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| John Alexander | #860 | #8 | 0 | 2,015 | 567 | 419 | 57.5% | 0 | 0 | 0 | 0 | 7 | 7 |
| Sammy Giammalva Jr | — | — | — | 1,803 | — | — | — | 0 | 0 | 0 | 0 | 2 | 0 |
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 | John Alexander | Sammy Giammalva Jr | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Yr | W-L | Win % | Rank | Elo | GS | Titles | Yr | W-L | Win % | Rank | Elo | GS | Titles | |
| 16 | 1968 | 27–14 | 65.9% | — | 1,630 | 0 | 0 | — | — | — | — | — | — | — |
| 17 | 1969 | 29–21 | 58.0% | — | 1,636 | 0 | 0 | — | — | — | — | — | — | — |
| 18 | 1970 | 24–14 | 63.2% | — | 1,819 | 0 | 1 | — | — | — | — | — | — | — |
| 19 | 1971 | 44–36 | 55.0% | — | 1,816 | 0 | 1 | — | — | — | — | — | — | — |
| 20 | 1972 | 36–32 | 52.9% | — | 1,856 | 0 | 1 | — | — | — | — | — | — | — |
| 21 | 1973 | 46–30 | 60.5% | #29 | 1,917 | 0 | 1 | — | — | — | — | — | — | — |
| 22 | 1974 | 38–23 | 62.3% | #26 | 1,849 | 0 | 1 | — | — | — | — | — | — | — |
| 23 | 1975 | 61–24 | 71.8% | #8 | 1,946 | 0 | 2 | — | — | — | — | — | — | — |
| 24 | 1976 | 19–21 | 47.5% | #47 | 1,841 | 0 | 2 | — | — | — | — | — | — | — |
| 25 | 1977 | 48–33 | 59.3% | #21 | 1,878 | 0 | 3 | — | — | — | — | — | — | — |
| 26 | 1978 | 50–31 | 61.7% | #22 | 1,810 | 0 | 3 | — | — | — | — | — | — | — |
| 27 | 1979 | 38–28 | 57.6% | #20 | 1,798 | 0 | 4 | — | — | — | — | — | — | — |
| 28 | 1980 | 10–18 | 35.7% | #100 | 1,686 | 0 | 4 | — | — | — | — | — | — | — |
| 29 | 1981 | 23–21 | 52.3% | #75 | 1,744 | 0 | 4 | — | — | — | — | — | — | — |
| 30 | 1982 | 38–21 | 64.4% | #31 | 1,792 | 0 | 6 | — | — | — | — | — | — | — |
| 31 | 1983 | 24–25 | 49.0% | #77 | 1,658 | 0 | 7 | — | — | — | — | — | — | — |
| 32 | 1984 | 12–21 | 36.4% | #142 | 1,565 | 0 | 7 | — | — | — | — | — | — | — |
| 33 | 1985 | 0–6 | 0.0% | #405 | 1,492 | 0 | 7 | — | — | — | — | — | — | — |
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 | John Alexander | Sammy Giammalva Jr | ||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Yr | Hard | Clay | Grass | Carpet | Yr | Hard | Clay | Grass | Carpet | |||||||||||||||||||||||||
| 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 % | |||
| 16 | 1968 | 0 | 1 | 1 | 0.0% | 22 | 10 | 32 | 68.8% | 5 | 3 | 8 | 62.5% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 17 | 1969 | 0 | 1 | 1 | 0.0% | 7 | 7 | 14 | 50.0% | 21 | 12 | 33 | 63.6% | 1 | 1 | 2 | 50.0% | 1980 | 6 | 3 | 9 | 66.7% | 0 | 1 | 1 | 0.0% | — | — | — | — | — | — | — | — |
| 18 | 1970 | 4 | 1 | 5 | 80.0% | 10 | 6 | 16 | 62.5% | 6 | 6 | 12 | 50.0% | 4 | 1 | 5 | 80.0% | 1981 | 13 | 8 | 21 | 61.9% | 8 | 7 | 15 | 53.3% | — | — | — | — | 2 | 5 | 7 | 28.6% |
| 19 | 1971 | 21 | 12 | 33 | 63.6% | 12 | 9 | 21 | 57.1% | 4 | 5 | 9 | 44.4% | 7 | 10 | 17 | 41.2% | 1982 | 0 | 3 | 3 | 0.0% | 1 | 5 | 6 | 16.7% | 6 | 3 | 9 | 66.7% | 1 | 4 | 5 | 20.0% |
| 20 | 1972 | 11 | 10 | 21 | 52.4% | 9 | 5 | 14 | 64.3% | 6 | 3 | 9 | 66.7% | 10 | 14 | 24 | 41.7% | 1983 | 11 | 10 | 21 | 52.4% | 6 | 5 | 11 | 54.5% | 2 | 3 | 5 | 40.0% | 5 | 2 | 7 | 71.4% |
| 21 | 1973 | 8 | 6 | 14 | 57.1% | 14 | 11 | 25 | 56.0% | 3 | 3 | 6 | 50.0% | 21 | 10 | 31 | 67.7% | 1984 | 8 | 7 | 15 | 53.3% | 3 | 4 | 7 | 42.9% | 3 | 2 | 5 | 60.0% | 1 | 2 | 3 | 33.3% |
| 22 | 1974 | 12 | 5 | 17 | 70.6% | 13 | 6 | 19 | 68.4% | 9 | 5 | 14 | 64.3% | 4 | 7 | 11 | 36.4% | 1985 | 10 | 8 | 18 | 55.6% | — | — | — | — | 4 | 4 | 8 | 50.0% | 4 | 5 | 9 | 44.4% |
| 23 | 1975 | 13 | 3 | 16 | 81.3% | 20 | 8 | 28 | 71.4% | 6 | 3 | 9 | 66.7% | 22 | 10 | 32 | 68.8% | 1986 | 6 | 8 | 14 | 42.9% | 3 | 3 | 6 | 50.0% | 2 | 2 | 4 | 50.0% | 3 | 4 | 7 | 42.9% |
| 24 | 1976 | 3 | 5 | 8 | 37.5% | 9 | 7 | 16 | 56.3% | 2 | 2 | 4 | 50.0% | 5 | 7 | 12 | 41.7% | 1987 | 4 | 8 | 12 | 33.3% | 2 | 3 | 5 | 40.0% | 4 | 3 | 7 | 57.1% | 5 | 5 | 10 | 50.0% |
| 25 | 1977 | 4 | 5 | 9 | 44.4% | 19 | 6 | 25 | 76.0% | 18 | 8 | 26 | 69.2% | 7 | 14 | 21 | 33.3% | 1988 | 7 | 8 | 15 | 46.7% | 2 | 2 | 4 | 50.0% | 3 | 3 | 6 | 50.0% | 4 | 2 | 6 | 66.7% |
| 26 | 1978 | 2 | 5 | 7 | 28.6% | 24 | 10 | 34 | 70.6% | 18 | 6 | 24 | 75.0% | 6 | 10 | 16 | 37.5% | 1989 | 4 | 5 | 9 | 44.4% | 0 | 2 | 2 | 0.0% | 0 | 3 | 3 | 0.0% | 1 | 0 | 1 | 100.0% |
| 27 | 1979 | 12 | 5 | 17 | 70.6% | 13 | 8 | 21 | 61.9% | 6 | 6 | 12 | 50.0% | 7 | 9 | 16 | 43.8% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 28 | 1980 | 4 | 5 | 9 | 44.4% | 3 | 2 | 5 | 60.0% | 1 | 3 | 4 | 25.0% | 2 | 8 | 10 | 20.0% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 29 | 1981 | 7 | 9 | 16 | 43.8% | 8 | 6 | 14 | 57.1% | 7 | 5 | 12 | 58.3% | 1 | 1 | 2 | 50.0% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 30 | 1982 | 6 | 5 | 11 | 54.5% | 10 | 7 | 17 | 58.8% | 16 | 5 | 21 | 76.2% | 6 | 4 | 10 | 60.0% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 31 | 1983 | 7 | 5 | 12 | 58.3% | 11 | 9 | 20 | 55.0% | 2 | 6 | 8 | 25.0% | 4 | 5 | 9 | 44.4% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 32 | 1984 | 4 | 6 | 10 | 40.0% | 4 | 5 | 9 | 44.4% | 3 | 7 | 10 | 30.0% | 1 | 3 | 4 | 25.0% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 33 | 1985 | 0 | 3 | 3 | 0.0% | 0 | 1 | 1 | 0.0% | 0 | 2 | 2 | 0.0% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Career | — | 118 | 92 | 210 | 56.2% | 208 | 123 | 331 | 62.8% | 133 | 90 | 223 | 59.6% | 108 | 114 | 222 | 48.6% | — | 69 | 68 | 137 | 50.4% | 25 | 32 | 57 | 43.9% | 24 | 23 | 47 | 51.1% | 26 | 29 | 55 | 47.3% |
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 | John Alexander | 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 | |
| 16 | 1968 | 1630 | 115.5 | — | — | — | — | — | +31 | -45 | 58.8% | +0.55 | 5–3 (63%) | — | — | -0.25 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 17 | 1969 | 1636 | 120.9 | — | — | — | — | -112 | +1 | +83 | 58.9% | +0.61 | 5–8 (38%) | — | — | +3.75 | 1980 | 1608 | 127.7 | — | — | — | — | +76 | — | — | 50.0% | -0.03 | 3–0 (100%) | 1–0 | — | +0.70 |
| 18 | 1970 | 1820 | 138.4 | — | — | — | — | -87 | -42 | -115 | 59.1% | +0.62 | 6–6 (50%) | 2–1 (67%) | — | +1.24 | 1981 | 1672 | 132.0 | — | — | — | — | +26 | -93 | — | 50.0% | -0.02 | 15–10 (60%) | 8–8 (50%) | 103.8 | +2.44 |
| 19 | 1971 | 1817 | 144.4 | — | — | — | — | -5 | +9 | -82 | 55.2% | +0.33 | 7–16 (30%) | 18–12 (60%) | 97.4 | -3.21 | 1982 | 1623 | 123.4 | — | — | — | — | -32 | -90 | +29 | 41.3% | -0.35 | 4–8 (33%) | 3–7 (30%) | 94.9 | +1.50 |
| 20 | 1972 | 1856 | 153.5 | — | — | — | — | -29 | +48 | -73 | 53.7% | +0.51 | 13–16 (45%) | 13–24 (35%) | 93.7 | -8.33 | 1983 | 1701 | 132.6 | — | — | — | — | -1 | -112 | -28 | 53.3% | -0.09 | 7–7 (50%) | 8–4 (67%) | 103.1 | +2.18 |
| 21 | 1973 | 1917 | 150.8 | — | — | — | — | +39 | -78 | -95 | 57.3% | +0.44 | 13–12 (52%) | 19–14 (58%) | 101.4 | -3.88 | 1984 | 1715 | 139.4 | — | — | — | — | -12 | -117 | +2 | 47.1% | -0.23 | 6–2 (75%) | 3–3 (50%) | 105.8 | -0.79 |
| 22 | 1974 | 1850 | 146.4 | — | — | — | — | +27 | +47 | +21 | 60.4% | +0.86 | 9–8 (53%) | 12–14 (46%) | 96.7 | +0.21 | 1985 | 1737 | 142.0 | — | — | — | — | +7 | — | +16 | 50.6% | +0.04 | 3–2 (60%) | 8–3 (73%) | 106.1 | -0.64 |
| 23 | 1975 | 1946 | 155.4 | — | — | — | — | +66 | +20 | -94 | 66.4% | +1.04 | 15–9 (63%) | 23–11 (68%) | 107.1 | -0.90 | 1986 | 1740 | 140.4 | — | — | — | — | -9 | -120 | -6 | 48.8% | +0.15 | 4–6 (40%) | 3–1 (75%) | 100.4 | -1.68 |
| 24 | 1976 | 1841 | 150.1 | — | — | — | — | +55 | +53 | -1 | 48.4% | -0.02 | 5–7 (42%) | 8–12 (40%) | 90.9 | -2.95 | 1987 | 1644 | 128.6 | — | — | — | — | +2 | -40 | +94 | 43.4% | -0.45 | 4–4 (50%) | 5–6 (45%) | 97.9 | +0.11 |
| 25 | 1977 | 1878 | 156.4 | — | — | — | — | -38 | +45 | +16 | 58.5% | +0.69 | 13–18 (42%) | 16–15 (52%) | 96.3 | -1.53 | 1988 | 1653 | 124.7 | — | — | — | — | -2 | -43 | +53 | 51.8% | +0.13 | 7–6 (54%) | 5–6 (45%) | 97.8 | +0.72 |
| 26 | 1978 | 1810 | 149.4 | — | — | — | — | -79 | +125 | +104 | 58.6% | +0.69 | 15–14 (52%) | 10–14 (42%) | 93.8 | +2.66 | 1989 | 1582 | 113.0 | — | — | — | — | +68 | — | +50 | 35.9% | -0.54 | 2–2 (50%) | 0–3 (0%) | 96.8 | +0.53 |
| 27 | 1979 | 1799 | 156.8 | — | — | — | — | +64 | +143 | -3 | 53.0% | +0.25 | 15–10 (60%) | 15–13 (54%) | 105.4 | -3.64 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 28 | 1980 | 1687 | 138.0 | — | — | — | — | +72 | +209 | +52 | 38.8% | -0.58 | 4–5 (44%) | 7–8 (47%) | 95.5 | -0.32 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 29 | 1981 | 1744 | 136.6 | — | — | — | — | -49 | +128 | 0 | 52.7% | +0.29 | 7–8 (47%) | 9–11 (45%) | 97.3 | +0.63 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 30 | 1982 | 1792 | 141.1 | — | — | — | — | -49 | +33 | +52 | 57.6% | +0.56 | 17–7 (71%) | 13–14 (48%) | 107.8 | +0.78 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 31 | 1983 | 1658 | 134.7 | — | — | — | — | +55 | +150 | +81 | 47.5% | +0.09 | 7–5 (58%) | 10–14 (42%) | 95.8 | +1.71 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 32 | 1984 | 1565 | 130.2 | — | — | — | — | +79 | +244 | +37 | 39.0% | -0.49 | 5–6 (45%) | 6–10 (38%) | 93.1 | -0.48 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 33 | 1985 | 1493 | 102.7 | — | — | — | — | +110 | — | — | 13.3% | -2.13 | 0–1 | 1–2 (33%) | — | -0.02 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Career | — | 2016 | 150.6 | — | — | — | — | +12 | +56 | +17 | 55.6% | +0.46 | 161–159 (50%) | 182–189 (49%) | 95.7 | -1.49 | — | 1804 | 139.2 | — | — | — | — | +8 | -94 | +29 | 48.1% | -0.11 | 55–47 (54%) | 44–41 (52%) | 103.6 | +1.72 |
Each player's five most-played main-draw opponents. The current matchup is highlighted when it appears in a player's top five.
| Opponent | W | L | M | Last Played | H2H |
|---|---|---|---|---|---|
| Ilie Nastase | 6 | 13 | 19 | Aug 6, 1981 | H2H |
| Harold Solomon | 7 | 9 | 16 | Jul 15, 1981 | H2H |
| Marty Riessen | 6 | 10 | 16 | Jan 25, 1978 | H2H |
| Cliff Drysdale | 8 | 7 | 15 | Sep 22, 1978 | H2H |
| Eddie Dibbs | 5 | 9 | 14 | May 19, 1983 | H2H |
| Opponent | W | L | M | Last Played | H2H |
|---|---|---|---|---|---|
| Scott Davis | 3 | 3 | 6 | Jul 9, 1987 | — |
| Bill Scanlon | 2 | 3 | 5 | Feb 15, 1989 | — |
| Tim Mayotte | 2 | 3 | 5 | Sep 3, 1987 | — |
| Jimmy Connors | 0 | 5 | 5 | Nov 20, 1986 | — |
| Ivan Lendl | 0 | 5 | 5 | Mar 28, 1986 | — |