Kimberly Po Messerli defeated Magui Serna 7-5 6-1 in the Manhattan Beach round of 32 on hard. The upset overturned the form book — Magui Serna came in leading the head-to-head 1–0. Kimberly Po Messerli claimed a first win over Magui Serna in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1997-08-25 | US Open | R32 | hard | Magui Serna | 6-4 6-3 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.