Patty Schnyder defeated Jana Novotna 2-6 7-5 7-5 in the Grand Slam Cup quarter-final on hard. The upset overturned the form book — Jana Novotna came in leading the head-to-head 4–1, but Patty Schnyder had been the form player, winning 5 of their last 7 on hard. Patty Schnyder narrowed the head-to-head to 4–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1999-03-18 | Key Biscayne | R16 | hard | Jana Novotna | 6-3 2-6 6-2 |
| 1998-08-31 | US Open | QF | hard | Jana Novotna | 6-2 6-3 |
| 1998-04-27 | Hamburg | SF | clay | Jana Novotna | 2-6 7-5 6-3 |
| 1998-02-18 | Hanover | F | carpet | Patty Schnyder | 6-0 2-6 7-5 |
| 1997-03-31 | Hilton Head | R32 | clay | Jana Novotna | 3-6 7-5 6-1 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.