Noppawan Lertcheewakarn defeated Sandy Gumulya 4-6 6-2 6-2 in the Balikpapan 25K semi-final on hard. The upset overturned the form book — Sandy Gumulya came in leading the head-to-head 2–0, but Noppawan Lertcheewakarn had been the form player, winning 4 of their last 6 on hard. Noppawan Lertcheewakarn claimed a first win over Sandy Gumulya in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2010-05-10 | Tanjung Selor 25K | R16 | hard | Sandy Gumulya | 6-3 6-2 |
| 2006-09-25 | Jakarta 10K | QF | hard | Sandy Gumulya | 6-4 4-6 6-2 |
Averages over each player's completed matches in the selected window (29 vs 1). ATP, WTA & Challenger.
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. Small sample — read as indicative. About