Marinne Giraud defeated Katie Obrien 6-1 6-1 in the Phoenix 25K qualifying round on hard. The upset overturned the form book — Katie Obrien came in leading the head-to-head 1–0. Marinne Giraud claimed a first win over Katie Obrien in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2009-04-27 | Johannesburg 100K | QF | hard | Katie Obrien | 6-3 6-2 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.