H2H data updated: 2026-08-31 00:00 UTC
Fiorella Bonicelli holds a 1–0 lead over Renata Ostermann in their WTA head-to-head. Across 1 main-draw meeting, Fiorella Bonicelli leads 1–0 on clay. Most recently, Fiorella Bonicelli won the 1970 Dusseldorf round of 32 8-6 6-8 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.
| Winner | Score | Loser | Match Data | Date | Round | Tournament | Category | Surface |
|---|---|---|---|---|---|---|---|---|
| Fiorella Bonicelli | 8-6 6-8 6-4 | Renata Ostermann | Match data | Jul 9, 1970* | R32 | Dusseldorf | WTA 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.
| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Fiorella Bonicelli | — | — | — | 1,868 | 137 | 98 | 58.3% | 0 | 0 | 0 | 0 | 12 | 12 |
| Renata Ostermann | — | — | — | 1,500 | 0 | 3 | 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.
| Age | Fiorella Bonicelli | Renata Ostermann | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Yr | W-L | Win % | Rank | Elo | GS | Titles | Yr | W-L | Win % | Rank | Elo | GS | Titles | |
| 16 | 1968 | 1–2 | 33.3% | — | 1,509 | 0 | 0 | — | — | — | — | — | — | — |
| 17 | 1969 | 11–8 | 57.9% | — | 1,604 | 0 | 0 | — | — | — | — | — | — | — |
| 18 | 1970 | 11–5 | 68.8% | — | 1,702 | 0 | 2 | — | — | — | — | — | — | — |
| 19 | 1971 | 12–10 | 54.5% | — | 1,701 | 0 | 6 | — | — | — | — | — | — | — |
| 20 | 1972 | 26–16 | 61.9% | — | 1,796 | 0 | 9 | — | — | — | — | — | — | — |
| 21 | 1973 | 24–11 | 68.6% | — | 1,842 | 0 | 11 | — | — | — | — | — | — | — |
| 22 | 1974 | 6–4 | 60.0% | — | 1,800 | 0 | 11 | — | — | — | — | — | — | — |
| 23 | 1975 | 12–13 | 48.0% | — | 1,774 | 0 | 12 | — | — | — | — | — | — | — |
| 24 | 1976 | 14–8 | 63.6% | — | 1,776 | 0 | 12 | — | — | — | — | — | — | — |
| 25 | 1977 | 9–10 | 47.4% | — | 1,763 | 0 | 12 | — | — | — | — | — | — | — |
| 26 | 1978 | 10–9 | 52.6% | — | 1,742 | 0 | 12 | — | — | — | — | — | — | — |
| 30 | 1982 | 0–1 | 0.0% | — | 1,728 | 0 | 12 | — | — | — | — | — | — | — |
| 31 | — | — | — | — | — | — | — | 1968 | 0–1 | 0.0% | — | 1,487 | 0 | 0 |
| 32 | 1984 | 1–1 | 50.0% | — | 1,717 | 0 | 12 | 1969 | 0–1 | 0.0% | — | 1,475 | 0 | 0 |
| 33 | — | — | — | — | — | — | — | 1970 | 0–1 | 0.0% | — | 1,465 | 0 | 0 |
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 | Fiorella Bonicelli | Renata Ostermann | ||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Yr | Hard | Clay | Grass | Yr | Hard | Clay | Grass | |||||||||||||||||||
| 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 | — | — | — | — | 1 | 2 | 3 | 33.3% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 17 | 1969 | — | — | — | — | 8 | 4 | 12 | 66.7% | 3 | 4 | 7 | 42.9% | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 18 | 1970 | — | — | — | — | 10 | 3 | 13 | 76.9% | 1 | 2 | 3 | 33.3% | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 19 | 1971 | — | — | — | — | 10 | 7 | 17 | 58.8% | 1 | 3 | 4 | 25.0% | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 20 | 1972 | 0 | 1 | 1 | 0.0% | 15 | 9 | 24 | 62.5% | 8 | 6 | 14 | 57.1% | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 21 | 1973 | — | — | — | — | 19 | 8 | 27 | 70.4% | 5 | 3 | 8 | 62.5% | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 22 | 1974 | — | — | — | — | 4 | 3 | 7 | 57.1% | 2 | 1 | 3 | 66.7% | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 23 | 1975 | 2 | 2 | 4 | 50.0% | 9 | 9 | 18 | 50.0% | 1 | 2 | 3 | 33.3% | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 24 | 1976 | — | — | — | — | 14 | 7 | 21 | 66.7% | 0 | 1 | 1 | 0.0% | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 25 | 1977 | 1 | 1 | 2 | 50.0% | 6 | 8 | 14 | 42.9% | 2 | 1 | 3 | 66.7% | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 26 | 1978 | — | — | — | — | 6 | 5 | 11 | 54.5% | 0 | 3 | 3 | 0.0% | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 30 | 1982 | — | — | — | — | 0 | 1 | 1 | 0.0% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 31 | — | — | — | — | — | — | — | — | — | — | — | — | — | 1968 | — | — | — | — | 0 | 1 | 1 | 0.0% | — | — | — | — |
| 32 | 1984 | — | — | — | — | 1 | 1 | 2 | 50.0% | — | — | — | — | 1969 | — | — | — | — | 0 | 1 | 1 | 0.0% | — | — | — | — |
| 33 | — | — | — | — | — | — | — | — | — | — | — | — | — | 1970 | — | — | — | — | 0 | 1 | 1 | 0.0% | — | — | — | — |
| Career | — | 3 | 4 | 7 | 42.9% | 103 | 67 | 170 | 60.6% | 23 | 26 | 49 | 46.9% | — | — | — | — | — | 0 | 3 | 3 | 0.0% | — | — | — | — |
Seasons are aligned by the age each player spent most of that calendar year. Metrics are precomputed from eligible main-draw results; point-stat values use the available detailed sample. 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 | Fiorella Bonicelli | Renata Ostermann | ||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Yr | Elo | P+ | Serve+ | Return+ | PD | TPW% | Hard Elo | Clay Elo | Grass Elo | Set Win % | Set Margin | Dec. Set | Tiebreak | Schedule | Yr | Elo | P+ | Serve+ | Return+ | PD | TPW% | Hard Elo | Clay Elo | Grass Elo | Set Win % | Set Margin | Dec. Set | Tiebreak | Schedule | |
| 16 | 1968 | 1510 | 98.3 | — | — | — | — | — | — | — | 40.0% | -0.60 | 1–0 | — | -0.19 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 17 | 1969 | 1604 | 117.2 | — | — | — | — | — | +35 | -68 | 61.0% | +0.41 | 0–3 (0%) | — | -0.11 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 18 | 1970 | 1702 | 116.4 | — | — | — | — | — | +53 | -159 | 61.8% | +0.44 | 3–1 (75%) | — | +1.28 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 19 | 1971 | 1702 | 122.1 | — | — | — | — | — | +58 | -185 | 54.9% | +0.33 | 3–4 (43%) | — | +2.08 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 20 | 1972 | 1796 | 137.0 | — | — | — | — | — | +57 | -166 | 58.0% | +0.53 | 10–6 (63%) | 4–2 (67%) | -0.59 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 21 | 1973 | 1842 | 136.2 | — | — | — | — | — | +53 | -147 | 63.0% | +0.73 | 8–3 (73%) | 6–4 (60%) | +0.33 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 22 | 1974 | 1800 | 119.7 | — | — | — | — | — | +33 | -78 | 66.7% | +1.33 | 1–2 (33%) | — | +0.49 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 23 | 1975 | 1774 | 138.4 | — | — | — | — | -137 | +22 | -84 | 51.7% | +0.29 | 6–6 (50%) | 1–3 (25%) | -2.39 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 24 | 1976 | 1777 | 132.4 | — | — | — | — | — | +29 | — | 59.2% | +0.84 | 4–1 (80%) | 2–1 (67%) | -0.37 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 25 | 1977 | 1763 | 128.8 | — | — | — | — | — | +1 | -63 | 50.0% | -0.02 | 2–4 (33%) | 3–2 (60%) | -0.83 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 26 | 1978 | 1743 | 134.2 | — | — | — | — | — | +42 | -82 | 55.8% | +0.28 | 1–4 (20%) | 2–2 (50%) | -1.32 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 30 | 1982 | 1728 | 102.7 | — | — | — | — | — | — | — | 0.0% | -3.00 | — | — | -0.22 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 31 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1968 | 1488 | 98.4 | — | — | — | — | — | — | — | 0.0% | -3.50 | — | — | -0.08 |
| 32 | 1984 | 1717 | 101.4 | — | — | — | — | — | — | — | 50.0% | +0.67 | 1–1 | — | +0.28 | 1969 | 1476 | 95.5 | — | — | — | — | — | — | — | 0.0% | -4.50 | — | — | +0.03 |
| 33 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1970 | 1465 | 101.7 | — | — | — | — | — | — | — | 33.3% | -0.67 | 0–1 | — | +0.01 |
| Career | — | 1868 | 138.2 | — | — | — | — | -137 | +40 | -127 | 57.4% | +0.47 | 40–35 (53%) | 18–14 (56%) | -0.67 | — | 1500 | 97.9 | — | — | — | — | — | — | — | 14.3% | -2.57 | 0–1 | — | -1.33 |
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 |
|---|---|---|---|---|---|
| Helga Masthoff | 1 | 6 | 7 | Apr 9, 1978 | H2H |
| Gail Sherriff | 4 | 3 | 7 | Apr 3, 1978 | H2H |
| Francoise Durr | 1 | 4 | 5 | Jun 28, 1978 | H2H |
| Raquel Giscafre | 4 | 1 | 5 | Jul 26, 1975 | H2H |
| Linda Tuero | 0 | 5 | 5 | Aug 20, 1972 | H2H |
| Opponent | W | L | M | Last Played | H2H |
|---|---|---|---|---|---|
| Fiorella Bonicelli | 0 | 1 | 1 | Jul 9, 1970 | H2H |
| Almut Sturm | 0 | 1 | 1 | Jul 11, 1969 | H2H |
| Rosie Reyes | 0 | 1 | 1 | Jul 11, 1968 | H2H |