Patty Schnyder defeated Arantxa Sanchez Vicario 6-3 6-0 in the Hamburg quarter-final on clay. The upset overturned the form book — Arantxa Sanchez Vicario came in leading the head-to-head 5–1, defending last year's round of 16. Patty Schnyder narrowed the head-to-head to 5–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2000-04-17 | Hilton Head | R16 | clay | Arantxa Sanchez Vicario | 7-5 6-1 |
| 2000-01-03 | Gold Coast | QF | hard | Arantxa Sanchez Vicario | 2-6 7-6(2) 6-3 |
| 1999-08-30 | US Open | R32 | hard | Arantxa Sanchez Vicario | 6-2 6-2 |
| 1998-09-19 | Fed Cup WG1 F: SUI vs ESP | RR | hard | Arantxa Sanchez Vicario | 6-2 3-6 6-2 |
| 1998-05-25 | Roland Garros | QF | clay | Arantxa Sanchez Vicario | 6-2 6-7(5) 6-0 |
| 1997-05-05 | Rome | QF | clay | Patty Schnyder | 6-1 6-1 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.