Monica Seles defeated Jana Novotna 7-6 6-2 in the US Open quarter-final on hard. The upset overturned the form book — Jana Novotna came in leading the head-to-head 2–1, defending last year's semi-final, but Monica Seles had been the form player, winning 3 of their last 4 on hard. Monica Seles narrowed the head-to-head to 2–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1998-05-25 | Roland Garros | QF | clay | Monica Seles | 4-6 6-3 6-3 |
| 1997-05-19 | Madrid | F | clay | Jana Novotna | 7-5 6-1 |
| 1996-05-27 | Roland Garros | QF | clay | Jana Novotna | 7-6(7) 6-3 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.