# Best Grand Slam Win Percentage in a Single WTA Season (Modern Era)

Source: https://tennis-db.com/wta/leaders/grand-slam-win-pct/single-season
Tour: WTA
Era: Modern Era (1990+)

## Leaderboard
| Rank | Player | Season | Wins | Win % | GS Wins | GS Win % | WTA 1000 Wins | WTA 1000 Win % |
| --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | Ashleigh Barty | 2022 | 11 | - | 7 | 100.0% | - | - |
| 2 | Kim Clijsters | 2009 | 13 | - | 7 | 100.0% | 5 | - |
| 3 | Monica Seles | 1993 | 17 | - | 7 | 100.0% | - | - |
| 4 | Monica Seles | 1991 | 74 | 92.5% | 21 | 100.0% | 10 | 90.9% |
| 5 | Serena Williams | 2017 | 8 | - | 7 | 100.0% | - | - |
| 6 | Serena Williams | 2002 | 57 | 91.9% | 21 | 100.0% | 17 | 89.5% |
| 7 | Steffi Graf | 1996 | 51 | 92.7% | 21 | 100.0% | 18 | 94.7% |
| 8 | Steffi Graf | 1995 | 48 | 96.0% | 21 | 100.0% | 10 | 90.9% |
| 9 | Martina Hingis | 1997 | 72 | 93.5% | 27 | 96.4% | 16 | 94.1% |
| 10 | Monica Seles | 1992 | 70 | 93.3% | 27 | 96.4% | 16 | 84.2% |
| 11 | Steffi Graf | 1993 | 77 | 93.9% | 27 | 96.4% | 27 | 90.0% |
| 12 | Serena Williams | 2015 | 50 | 89.3% | 26 | 96.3% | 23 | 85.2% |
| 13 | Justine Henin | 2007 | 63 | 94.0% | 19 | 95.0% | 17 | 89.5% |
| 14 | Serena Williams | 2003 | 36 | 92.3% | 19 | 95.0% | 13 | 86.7% |
| 15 | Aryna Sabalenka | 2024 | 56 | 80.0% | 18 | 94.7% | 28 | 80.0% |
| 16 | Serena Williams | 2010 | 25 | 86.2% | 18 | 94.7% | 4 | - |
| 17 | Venus Williams | 2000 | 35 | 89.7% | 18 | 94.7% | 1 | - |
| 18 | Jennifer Capriati | 2001 | 56 | 80.0% | 24 | 92.3% | 20 | 80.0% |
| 19 | Justine Henin | 2003 | 73 | 86.9% | 24 | 92.3% | 22 | 95.7% |
| 20 | Arantxa Sanchez-Vicario | 1994 | 69 | 88.5% | 23 | 92.0% | 10 | 76.9% |
| 21 | Serena Williams | 2009 | 50 | 79.4% | 23 | 92.0% | 14 | 66.7% |
| 22 | Amélie Mauresmo | 2006 | 50 | 78.1% | 22 | 91.7% | 9 | 69.2% |
| 23 | Iga Swiatek | 2022 | 65 | 87.8% | 21 | 91.3% | 25 | 89.3% |
| 24 | Serena Williams | 2013 | 77 | 93.9% | 21 | 91.3% | 36 | 94.7% |
| 25 | Angelique Kerber | 2016 | 54 | 77.1% | 20 | 90.9% | 14 | 63.6% |

Showing top 25 of 200 rows.

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Canonical URL: https://tennis-db.com/wta/leaders/grand-slam-win-pct/single-season
Data source: TennisDB (tennis-db.com)