Site data updated: 2026-05-28 18:14 UTC
Katerina Siniakova def. Serena Williams
7-6(4) 6-2
Match Information
| Date | May 21, 2021* |
|---|---|
| Tournament | Parma |
| Category | WTA 250 |
| Surface | Clay |
| Round | R16 |
| Winner | Katerina Siniakova |
| Score | 7-6(4) 6-2 |
| Loser | Serena Williams |
| Stat | Katerina Siniakova | Serena Williams |
|---|---|---|
| Aces | 0 | 5 |
| Double faults | 4 | 7 |
| First serve % | 59 | 65 |
| First serve points won % | 72 | 60 |
| Second serve points won % | 64 | 42 |
| Break points saved % | 50 | 50 |
| Break points converted % | 50 | 50 |
| Service points won % | 69 | 54 |
| Return points won % | 46 | 31 |
| Total points won % | 57 | 43 |
Pre-match Comparison
| Field | Katerina Siniakova | Serena Williams |
|---|---|---|
| Country | CZE | USA |
| Birth date | May 10, 1996 | Sep 26, 1981 |
| Age | 25 | 39 |
| Height | 174 | 175 |
| Handedness | Right-Handed | Right-Handed |
| Backhand style | — | Two-Handed Backhand |
| Ranking (entering) | 68 | 8 |
| Ranking points (entering) | 1,195 | 4,791 |
| Elo (entering) | 1,667 | 2,008 |
| Career W-L | 227–241 | 825–170 |
| Career earnings | $16,904,434 | $94,932,862 |
Path
Katerina Siniakova's path
| Date | Round | Opponent | Score | W/L | H2H | Match data |
|---|---|---|---|---|---|---|
| May 20, 2021 | R32 | Clara Tauson | 6-1 6-3 | W | H2H | Match data |
Katerina Siniakova's next match
| Date | Round | Opponent | Score | W/L | H2H | Match data |
|---|---|---|---|---|---|---|
| May 22, 2021 | QF | Caroline Garcia | 7-5 6-1 | W | H2H | Match data |
Serena Williams's path
| Date | Round | Opponent | Score | W/L | H2H | Match data |
|---|---|---|---|---|---|---|
| May 20, 2021 | R32 | Lisa Pigato | 6-3 6-2 | W | H2H | Match data |