H2H data updated: 2026-09-12 00:00 UTC
Sandra Birch holds a 1–0 lead over Karim Strohmeier Merino in their WTA head-to-head. Across 1 main-draw meeting, Sandra Birch leads 1–0 on hard courts. Most recently, Sandra Birch won the 1989 Schenectady round of 64 6-4 6-1.
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| Player | Score | Player | Match Data | Date | Round | Tournament | Category | Surface |
|---|---|---|---|---|---|---|---|---|
| Sandra Birch | 6-4 6-1 | Karim Strohmeier Merino | Match data | Jul 26, 1989* | R64 | Schenectady | WTA 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sandra Birch | #464 | #187 | 3 | 1,553 | 4 | 5 | 44.4% | 0 | 0 | 0 | 0 | 0 | 0 |
| Karim Strohmeier Merino | — | — | — | 1,500 | 0 | 2 | 0.0% | 0 | 0 | 0 | 0 | 0 | 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.
| Sandra Birch | Karim Strohmeier Merino | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Yr | W-L | Win % | Rank | Elo | GS | Titles | Yr | W-L | Win % | Rank | Elo | GS | Titles |
| 1989 | 4–3 | 57.1% | #204 | 1,545 | 0 | 0 | 1988 | 0–1 | 0.0% | — | 1,481 | 0 | 0 |
| 1991 | 0–2 | 0.0% | #403 | 1,530 | 0 | 0 | 1989 | 0–1 | 0.0% | — | 1,466 | 0 | 0 |
Rows are aligned in career order because complete birth data is unavailable. 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.
| Sandra Birch | Karim Strohmeier Merino | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Yr | Hard | Yr | Hard | ||||||
| W | L | M | Win % | W | L | M | Win % | ||
| 1989 | 4 | 3 | 7 | 57.1% | 1988 | 0 | 1 | 1 | 0.0% |
| 1991 | 0 | 2 | 2 | 0.0% | 1989 | 0 | 1 | 1 | 0.0% |
| Career | 4 | 5 | 9 | 44.4% | Career | 0 | 2 | 2 | 0.0% |
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.
| Sandra Birch | Karim Strohmeier Merino | ||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 |
| 1989 | 1545 | 113.8 | — | — | — | — | +42 | — | — | 62.5% | +0.25 | 0–2 | 1–0 | — | +0.47 | 1988 | 1482 | 98.9 | — | — | — | — | — | — | — | 33.3% | -1.33 | 0–1 | 1–0 | — | +0.24 |
| 1991 | 1530 | 100.6 | — | — | — | — | — | — | — | 0.0% | -4.75 | — | — | — | -0.21 | 1989 | 1467 | 96.5 | — | — | — | — | — | — | — | 0.0% | -3.50 | — | — | — | +0.20 |
| Career | 1553 | 108.4 | — | — | — | — | +42 | — | — | 50.0% | -0.75 | 0–2 | 1–0 | — | +2.89 | Career | 1500 | 97.7 | — | — | — | — | — | — | — | 20.0% | -2.20 | 0–1 | 1–0 | — | +22.00 |
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 |
|---|---|---|---|---|---|
| Manuela Maleeva Fragniere | 0 | 1 | 1 | Aug 28, 1991 | H2H |
| Barbara Rittner | 0 | 1 | 1 | Aug 22, 1991 | H2H |
| Conchita Martínez | 0 | 1 | 1 | Aug 30, 1989 | H2H |
| Catarina Lindqvist Ryan | 0 | 1 | 1 | Aug 10, 1989 | H2H |
| Jennifer Santrock | 1 | 0 | 1 | Aug 9, 1989 | H2H |
| Opponent | W | L | M | Last Played | H2H |
|---|---|---|---|---|---|
| Sandra Birch | 0 | 1 | 1 | Jul 26, 1989 | H2H |
| Andrea Vieira | 0 | 1 | 1 | Nov 10, 1988 | H2H |