Klaus Eberhard
all rivalries →| Opponent | W | L | M | Last Played | H2H |
|---|---|---|---|---|---|
| Balazs Taroczy | 1 | 3 | 4 | May 25, 1979 | H2H |
| Ismail El Shafei | 3 | 0 | 3 | Feb 26, 1982 | — |
| Bernie Mitton | 1 | 2 | 3 | Oct 21, 1981 | H2H |
| Chris Lewis | 1 | 2 | 3 | May 22, 1981 | H2H |
| Jimmy Connors | 0 | 2 | 2 | Mar 10, 1983 | H2H |
H2H data updated: 2026-10-18 00:00 UTC
Klaus Eberhard vs Sammy Giammalva Jr H2H: 1-0
Klaus Eberhard holds a 1–0 lead over Sammy Giammalva Jr in their ATP head-to-head. Across 1 main-draw meeting, Klaus Eberhard leads 1–0 on clay. Most recently, Klaus Eberhard won the 1981 Hamburg Open round of 32 6-2 6-4.
Want to explore more matchups? Advanced rivalry search lets you browse current and historical rivalries, unbeaten records, or every matchup for a player.
H2H
1
–
0
1 main-draw meetings
H2H Match Log
| Player | Score | Player | Match Data | Date | Round | Tournament | Category | Surface |
|---|---|---|---|---|---|---|---|---|
| Klaus Eberhard | 6-2 6-4 | Sammy Giammalva Jr | Match data | May 14, 1981* | R32 | Hamburg Open | 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Klaus Eberhard | #751 | #81 | 0 | 1,660 | 53 | 72 | 42.4% | 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 | Klaus Eberhard | Sammy Giammalva Jr | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Yr | W-L | Win % | Rank | Elo | GS | Titles | Yr | W-L | Win % | Rank | Elo | GS | Titles | |
| 18 | 1976 | 0–4 | 0.0% | #264 | 1,465 | 0 | 0 | — | — | — | — | — | — | — |
| 19 | 1977 | 2–4 | 33.3% | #246 | 1,462 | 0 | 0 | — | — | — | — | — | — | — |
| 20 | 1978 | 6–7 | 46.2% | #180 | 1,543 | 0 | 0 | — | — | — | — | — | — | — |
| 21 | 1979 | 9–10 | 47.4% | #199 | 1,595 | 0 | 0 | — | — | — | — | — | — | — |
| 22 | 1980 | 11–14 | 44.0% | #104 | 1,587 | 0 | 0 | — | — | — | — | — | — | — |
| 23 | 1981 | 15–17 | 46.9% | #89 | 1,583 | 0 | 0 | — | — | — | — | — | — | — |
| 24 | 1982 | 8–12 | 40.0% | — | 1,561 | 0 | 0 | — | — | — | — | — | — | — |
| 25 | 1983 | 0–1 | 0.0% | #208 | 1,560 | 0 | 0 | — | — | — | — | — | — | — |
| 26 | 1984 | 0–1 | 0.0% | #278 | 1,544 | 0 | 0 | — | — | — | — | — | — | — |
| 27 | 1985 | 2–2 | 50.0% | #279 | 1,557 | 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 | Klaus Eberhard | 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 % | |||
| 17 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1980 | 6 | 3 | 9 | 66.7% | 0 | 1 | 1 | 0.0% | — | — | — | — | — | — | — | — |
| 18 | 1976 | 0 | 1 | 1 | 0.0% | 0 | 3 | 3 | 0.0% | — | — | — | — | — | — | — | — | 1981 | 13 | 8 | 21 | 61.9% | 8 | 7 | 15 | 53.3% | — | — | — | — | 2 | 5 | 7 | 28.6% |
| 19 | 1977 | — | — | — | — | 1 | 3 | 4 | 25.0% | 1 | 1 | 2 | 50.0% | — | — | — | — | 1982 | 0 | 3 | 3 | 0.0% | 1 | 5 | 6 | 16.7% | 6 | 3 | 9 | 66.7% | 1 | 4 | 5 | 20.0% |
| 20 | 1978 | — | — | — | — | 6 | 6 | 12 | 50.0% | — | — | — | — | 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 | 1979 | 3 | 3 | 6 | 50.0% | 6 | 7 | 13 | 46.2% | — | — | — | — | — | — | — | — | 1984 | 8 | 7 | 15 | 53.3% | 3 | 4 | 7 | 42.9% | 3 | 2 | 5 | 60.0% | 1 | 2 | 3 | 33.3% |
| 22 | 1980 | 0 | 4 | 4 | 0.0% | 11 | 10 | 21 | 52.4% | — | — | — | — | — | — | — | — | 1985 | 10 | 8 | 18 | 55.6% | — | — | — | — | 4 | 4 | 8 | 50.0% | 4 | 5 | 9 | 44.4% |
| 23 | 1981 | 5 | 7 | 12 | 41.7% | 10 | 9 | 19 | 52.6% | 0 | 1 | 1 | 0.0% | — | — | — | — | 1986 | 6 | 8 | 14 | 42.9% | 3 | 3 | 6 | 50.0% | 2 | 2 | 4 | 50.0% | 3 | 4 | 7 | 42.9% |
| 24 | 1982 | 0 | 3 | 3 | 0.0% | 8 | 7 | 15 | 53.3% | — | — | — | — | 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 | 1983 | — | — | — | — | — | — | — | — | — | — | — | — | 0 | 1 | 1 | 0.0% | 1988 | 7 | 8 | 15 | 46.7% | 2 | 2 | 4 | 50.0% | 3 | 3 | 6 | 50.0% | 4 | 2 | 6 | 66.7% |
| 26 | 1984 | — | — | — | — | 0 | 1 | 1 | 0.0% | — | — | — | — | — | — | — | — | 1989 | 4 | 5 | 9 | 44.4% | 0 | 2 | 2 | 0.0% | 0 | 3 | 3 | 0.0% | 1 | 0 | 1 | 100.0% |
| 27 | 1985 | — | — | — | — | 2 | 2 | 4 | 50.0% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Career | — | 8 | 18 | 26 | 30.8% | 44 | 48 | 92 | 47.8% | 1 | 2 | 3 | 33.3% | 0 | 4 | 4 | 0.0% | — | 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 | Klaus Eberhard | 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 | 1976 | 1466 | 103.4 | — | — | — | — | — | +41 | — | 11.1% | -2.33 | 0–1 | 1–1 | — | +0.02 | 1981 | 1672 | 132.0 | — | — | — | — | +26 | -93 | — | 50.0% | -0.02 | 15–10 (60%) | 8–8 (50%) | 103.8 | +2.44 |
| 19 | 1977 | 1463 | 104.8 | — | — | — | — | — | +42 | — | 33.3% | -1.17 | — | — | — | +0.66 | 1982 | 1623 | 123.4 | — | — | — | — | -34 | -90 | +29 | 41.3% | -0.35 | 4–8 (33%) | 3–7 (30%) | 94.9 | +1.50 |
| 20 | 1978 | 1543 | 128.6 | — | — | — | — | — | +38 | — | 48.6% | -0.40 | 2–3 (40%) | 4–3 (57%) | 102.7 | +0.03 | 1983 | 1701 | 132.6 | — | — | — | — | -1 | -112 | -28 | 53.3% | -0.09 | 7–7 (50%) | 8–4 (67%) | 103.1 | +2.18 |
| 21 | 1979 | 1596 | 124.6 | — | — | — | — | -32 | +11 | — | 50.0% | -0.11 | 2–4 (33%) | 3–2 (60%) | 98.9 | +0.97 | 1984 | 1715 | 139.4 | — | — | — | — | -12 | -117 | +2 | 47.1% | -0.23 | 6–2 (75%) | 3–3 (50%) | 105.8 | -0.79 |
| 22 | 1980 | 1588 | 117.4 | — | — | — | — | -92 | +40 | — | 46.6% | -0.19 | 2–3 (40%) | 5–6 (45%) | 99.3 | +1.59 | 1985 | 1737 | 142.0 | — | — | — | — | +7 | — | +16 | 50.6% | +0.04 | 3–2 (60%) | 8–3 (73%) | 106.1 | -0.64 |
| 23 | 1981 | 1584 | 122.8 | — | — | — | — | -56 | +43 | — | 47.5% | -0.16 | 6–7 (46%) | 5–4 (56%) | 100.8 | +2.56 | 1986 | 1740 | 140.4 | — | — | — | — | -9 | -120 | -6 | 48.8% | +0.15 | 4–6 (40%) | 3–1 (75%) | 100.4 | -1.68 |
| 24 | 1982 | 1561 | 113.8 | — | — | — | — | -88 | +77 | — | 42.0% | -0.44 | 4–3 (57%) | 1–3 (25%) | 99.7 | +1.31 | 1987 | 1644 | 128.6 | — | — | — | — | +2 | -40 | +94 | 43.4% | -0.45 | 4–4 (50%) | 5–6 (45%) | 97.9 | +0.11 |
| 25 | 1983 | 1561 | 114.1 | — | — | — | — | — | — | — | 0.0% | -3.50 | — | — | — | -0.26 | 1988 | 1653 | 124.7 | — | — | — | — | -2 | -43 | +53 | 51.8% | +0.13 | 7–6 (54%) | 5–6 (45%) | 97.8 | +0.72 |
| 26 | 1984 | 1545 | 97.6 | — | — | — | — | — | — | — | 0.0% | -3.50 | — | — | — | +0.09 | 1989 | 1582 | 113.0 | — | — | — | — | +68 | — | +50 | 35.9% | -0.54 | 2–2 (50%) | 0–3 (0%) | 96.8 | +0.53 |
| 27 | 1985 | 1558 | 111.4 | — | — | — | — | — | +51 | — | 46.2% | -0.69 | 2–1 (67%) | 1–0 | — | -0.03 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Career | — | 1661 | 125.8 | — | — | — | — | -62 | +43 | — | 44.6% | -0.40 | 18–22 (45%) | 20–19 (51%) | 102.5 | +5.55 | — | 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.
Sammy Giammalva Jr
all rivalries →| 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 | — |