Gwynn Sammel
all rivalries →| Opponent | W | L | M | Last Played | H2H |
|---|---|---|---|---|---|
| Sharon Walsh Pete | 0 | 2 | 2 | Nov 21, 1974 | H2H |
| Ching Ling Chang | 0 | 2 | 2 | Apr 18, 1974 | H2H |
| Brigette Cuypers | 0 | 1 | 1 | Nov 30, 1979 | H2H |
| Lise Gregory | 1 | 0 | 1 | Nov 29, 1979 | H2H |
| Sue Saliba | 0 | 1 | 1 | Jun 1, 1978 | H2H |
H2H data updated: 2026-09-12 00:00 UTC
Gwynn Sammel vs Lisa Beritzhoff H2H: 1-0
Gwynn Sammel holds a 1–0 lead over Lisa Beritzhoff in their WTA head-to-head. Across 1 main-draw meeting, Gwynn Sammel leads 1–0 on grass. Most recently, Gwynn Sammel won the 1978 Surbiton round of 128 7-6 6-2.
Want to explore more matchups? Advanced rivalry search lets you browse current and historical rivalries, unbeaten records, or every matchup for a player.
H2H Match Log
| Player | Score | Player | Match Data | Date | Round | Tournament | Category | Surface |
|---|---|---|---|---|---|---|---|---|
| Gwynn Sammel | 7-6 6-2 | Lisa Beritzhoff | Match data | May 30, 1978* | R128 | Surbiton | WTA 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Gwynn Sammel | — | — | — | 1,505 | 14 | 25 | 35.9% | 0 | 0 | 0 | 0 | 0 | 0 |
| Lisa Beritzhoff | — | — | — | 1,500 | 0 | 2 | 0.0% | 0 | 0 | 0 | 0 | 0 | 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.
| Gwynn Sammel | Lisa Beritzhoff | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Yr | W-L | Win % | Rank | Elo | GS | Titles | Yr | W-L | Win % | Rank | Elo | GS | Titles |
| 1973 | 1–2 | 33.3% | — | 1,488 | 0 | 0 | 1978 | 0–2 | 0.0% | — | 1,467 | 0 | 0 |
| 1974 | 4–13 | 23.5% | — | 1,405 | 0 | 0 | — | — | — | — | — | — | — |
| 1975 | 0–1 | 0.0% | — | 1,396 | 0 | 0 | — | — | — | — | — | — | — |
| 1977 | 5–5 | 50.0% | — | 1,462 | 0 | 0 | — | — | — | — | — | — | — |
| 1978 | 3–3 | 50.0% | — | 1,473 | 0 | 0 | — | — | — | — | — | — | — |
| 1979 | 1–1 | 50.0% | — | 1,484 | 0 | 0 | — | — | — | — | — | — | — |
Advanced Statistics Comparison by Career Season
Rows are aligned in career order because complete birth data is unavailable. 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.
| Gwynn Sammel | Lisa Beritzhoff | ||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 |
| 1973 | 1489 | 94.4 | — | — | — | — | — | — | — | 0.0% | -4.75 | — | — | — | -0.09 | 1978 | 1467 | 95.7 | — | — | — | — | — | — | — | 0.0% | -3.25 | — | 0–1 | — | +0.04 |
| 1974 | 1406 | 83.4 | — | — | — | — | +120 | +25 | — | 23.7% | -2.29 | 3–1 (75%) | 1–2 (33%) | — | +1.95 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 1975 | 1397 | 94.0 | — | — | — | — | — | — | — | 0.0% | -3.50 | — | — | — | +0.08 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 1977 | 1463 | 108.6 | — | — | — | — | — | — | +151 | 48.1% | -0.11 | 4–3 (57%) | 1–1 | — | +1.03 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 1978 | 1473 | 101.2 | — | — | — | — | — | — | +161 | 53.8% | +0.23 | 0–1 | 1–0 | — | +0.53 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 1979 | 1484 | 101.0 | — | — | — | — | — | — | — | 40.0% | -0.80 | 1–0 | 0–1 | — | +0.38 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Career | 1505 | 93.4 | — | — | — | — | +120 | +25 | +154 | 34.8% | -1.31 | 8–5 (62%) | 3–4 (43%) | 102.5 | +10.21 | Career | 1500 | 97.6 | — | — | — | — | — | — | — | 0.0% | -3.25 | — | 0–1 | — | +2.00 |
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.
Lisa Beritzhoff
all rivalries →| Opponent | W | L | M | Last Played | H2H |
|---|---|---|---|---|---|
| Gwynn Sammel | 0 | 1 | 1 | May 30, 1978 | H2H |
| Kate Brasher | 0 | 1 | 1 | May 24, 1978 | H2H |