Martina Hingis defeated Sarah Pitkowski Malcor 6-1 6-1 in the US Open round of 64 on hard. The result followed the form book — Martina Hingis came in leading the head-to-head 1–0, defending last year's final. Martina Hingis extended the head-to-head to 2–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1998-03-05 | Indian Wells | R32 | hard | Martina Hingis | 6-2 6-1 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.