Martina Hingis defeated Patricia Hy Boulais 4-6 6-1 6-4 in the US Open round of 32 on hard. The result followed the form book — Martina Hingis came in leading the head-to-head 1–0. Martina Hingis extended the head-to-head to 2–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1997-03-20 | Key Biscayne | R64 | hard | Martina Hingis | 3-6 6-3 6-2 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.