Adria Engel defeated Alison Cohen 4-6 6-1 6-3 in the Oklahoma 10K round of 32 on hard. The upset overturned the form book — Alison Cohen came in leading the head-to-head 1–0. Adria Engel claimed a first win over Alison Cohen in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1998-06-24 | Springfield 10K | R16 | hard | Alison Cohen | 6-4 6-4 |