H2H data updated: 2026-09-14 00:00 UTC
Michelle Ballheimer holds a 1–0 lead over Mary Ann Colville in their WTA head-to-head. Across 1 main-draw meeting, Michelle Ballheimer leads 1–0 on grass. Most recently, Michelle Ballheimer won the 1977 Surbiton round of 32 6-3 6-3.
Want to explore more matchups? Advanced rivalry search lets you browse current and historical rivalries, unbeaten records, or every matchup for a player.
| Player | Score | Player | Match Data | Date | Round | Tournament | Category | Surface |
|---|---|---|---|---|---|---|---|---|
| Michelle Ballheimer | 6-3 6-3 | Mary Ann Colville | Match data | May 26, 1977* | R32 | 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.
| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mary Ann Colville | — | — | — | 1,500 | 6 | 23 | 20.7% | 0 | 0 | 0 | 0 | 0 | 0 |
| Michelle Ballheimer | — | — | — | 1,500 | 2 | 6 | 25.0% | 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.
| Mary Ann Colville | Michelle Ballheimer | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Yr | W-L | Win % | Rank | Elo | GS | Titles | Yr | W-L | Win % | Rank | Elo | GS | Titles |
| 1977 | 1–3 | 25.0% | — | 1,466 | 0 | 0 | 1975 | 0–2 | 0.0% | — | 1,466 | 0 | 0 |
| 1978 | 1–2 | 33.3% | — | 1,454 | 0 | 0 | 1976 | 0–1 | 0.0% | — | 1,459 | 0 | 0 |
| 1980 | 4–8 | 33.3% | — | 1,456 | 0 | 0 | 1977 | 2–2 | 50.0% | — | 1,471 | 0 | 0 |
| 1982 | 0–4 | 0.0% | — | 1,406 | 0 | 0 | 1982 | 0–1 | 0.0% | — | 1,451 | 0 | 0 |
| 1983 | 0–2 | 0.0% | — | 1,387 | 0 | 0 | — | — | — | — | — | — | — |
| 1984 | 0–1 | 0.0% | — | 1,379 | 0 | 0 | — | — | — | — | — | — | — |
| 1985 | 0–3 | 0.0% | — | 1,348 | 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.
| Mary Ann Colville | Michelle Ballheimer | ||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 % | ||
| 1977 | — | — | — | — | — | — | — | — | 1 | 2 | 3 | 33.3% | 0 | 1 | 1 | 0.0% | 1975 | — | — | — | — | 0 | 1 | 1 | 0.0% | 0 | 1 | 1 | 0.0% | — | — | — | — |
| 1978 | — | — | — | — | — | — | — | — | 0 | 1 | 1 | 0.0% | — | — | — | — | 1976 | — | — | — | — | 0 | 1 | 1 | 0.0% | — | — | — | — | — | — | — | — |
| 1980 | 1 | 2 | 3 | 33.3% | 2 | 2 | 4 | 50.0% | — | — | — | — | — | — | — | — | 1977 | — | — | — | — | 0 | 1 | 1 | 0.0% | 2 | 1 | 3 | 66.7% | — | — | — | — |
| 1982 | — | — | — | — | 0 | 2 | 2 | 0.0% | 0 | 1 | 1 | 0.0% | — | — | — | — | 1982 | — | — | — | — | 0 | 1 | 1 | 0.0% | — | — | — | — | — | — | — | — |
| 1983 | — | — | — | — | — | — | — | — | 0 | 2 | 2 | 0.0% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 1984 | 0 | 1 | 1 | 0.0% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Career | 1 | 3 | 4 | 25.0% | 2 | 4 | 6 | 33.3% | 1 | 6 | 7 | 14.3% | 0 | 1 | 1 | 0.0% | Career | — | — | — | — | 0 | 4 | 4 | 0.0% | 2 | 2 | 4 | 50.0% | — | — | — | — |
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.
| Mary Ann Colville | Michelle Ballheimer | ||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 |
| 1977 | 1467 | 95.6 | — | — | — | — | — | — | +50 | 25.0% | -1.38 | — | — | — | +0.72 | 1975 | 1467 | 90.6 | — | — | — | — | — | — | — | 0.0% | -4.50 | — | — | — | +0.35 |
| 1978 | 1454 | 98.2 | — | — | — | — | — | — | — | 33.3% | -0.67 | — | — | — | +0.20 | 1976 | 1459 | 96.5 | — | — | — | — | — | — | — | 0.0% | -4.50 | — | — | — | +0.03 |
| 1980 | 1457 | 103.7 | — | — | — | — | +61 | +85 | — | 39.1% | -0.78 | 0–1 | 1–0 | — | +0.09 | 1977 | 1472 | 101.5 | — | — | — | — | — | — | +75 | 50.0% | -0.13 | — | — | — | +0.54 |
| 1982 | 1407 | 91.0 | — | — | — | — | — | — | — | 20.0% | -2.70 | 0–2 | — | — | +0.48 | 1982 | 1452 | 93.3 | — | — | — | — | — | — | — | 0.0% | -5.00 | — | — | — | +0.33 |
| 1983 | 1388 | 96.3 | — | — | — | — | — | — | — | 0.0% | -3.00 | — | — | — | +0.25 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 1984 | 1380 | 96.3 | — | — | — | — | — | — | — | 0.0% | -3.00 | — | — | — | +0.06 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 1985 | 1349 | 81.1 | — | — | — | — | — | — | — | 0.0% | -5.17 | — | — | — | +0.01 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Career | 1501 | 90.3 | — | — | — | — | +61 | +85 | +50 | 25.4% | -1.85 | 0–3 (0%) | 1–0 | — | +6.46 | Career | 1500 | 92.7 | — | — | — | — | — | — | +75 | 25.0% | -2.38 | — | — | — | +15.63 |
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 |
|---|---|---|---|---|---|
| Cathy Drury | 0 | 2 | 2 | Jun 5, 1980 | H2H |
| Kirsten Dreyer | 0 | 1 | 1 | Sep 26, 1985 | H2H |
| Laura Golarsa | 0 | 1 | 1 | Sep 12, 1985 | H2H |
| Micki Schillig | 0 | 1 | 1 | Jul 11, 1985 | H2H |
| Sabina Simmonds | 0 | 1 | 1 | Jul 12, 1984 | H2H |
| Opponent | W | L | M | Last Played | H2H |
|---|---|---|---|---|---|
| Cathleen Farrell | 0 | 1 | 1 | Apr 28, 1982 | H2H |
| Annette Coe | 0 | 1 | 1 | May 27, 1977 | H2H |
| Mary Ann Colville | 1 | 0 | 1 | May 26, 1977 | H2H |
| Ellen Drieberger | 1 | 0 | 1 | May 25, 1977 | H2H |
| Corinne Molesworth | 0 | 1 | 1 | Apr 22, 1977 | H2H |