Steffi Graf defeated Judith Wiesner 7-5 6-3 in the US Open quarter-final on hard. The result followed the form book — Steffi Graf came in leading the head-to-head 1–0, defending the title. Steffi Graf extended the head-to-head to 2–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1991-08-26 | US Open | R16 | hard | Steffi Graf | 7-5 6-4 |