Monica Seles defeated Natalia Zvereva 6-0 6-1 in the Philadelphia quarter-final on carpet. The result followed the form book — Monica Seles came in leading the head-to-head 4–1, defending last year's quarter-final. Monica Seles extended the head-to-head to 5–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1998-06-22 | Wimbledon | QF | grass | Natalia Zvereva | 7-6 6-2 |
| 1998-03-30 | Hilton Head | R16 | clay | Monica Seles | 6-0 6-7 6-2 |
| 1997-09-15 | Tokyo | QF | hard | Monica Seles | 6-1 6-0 |
| 1997-08-04 | Manhattan Beach | QF | hard | Monica Seles | 6-1 6-1 |
| 1997-07-28 | San Diego | QF | hard | Monica Seles | 6-1 6-3 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.