Beatrice Gumulya defeated Mia Sacca 6-2 6-2 in the Tarakan 10K round of 32 on hard. The upset overturned the form book — Mia Sacca came in leading the head-to-head 2–0. Beatrice Gumulya claimed a first win over Mia Sacca in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2007-04-30 | Jakarta 10K | R32 | hard | Mia Sacca | 6-1 2-6 6-1 |
| 2006-09-25 | Jakarta 10K | R32 | hard | Mia Sacca | 3-6 6-1 6-3 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.