So Jung Kim defeated Sandy Gumulya 6-2 4-6 7-5 in the Manila 10K round of 16 on clay. The upset overturned the form book — Sandy Gumulya came in leading the head-to-head 2–1. So Jung Kim narrowed the head-to-head to 2–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2006-09-11 | Bali | R32 | hard | Sandy Gumulya | 7-5 6-4 |
| 2004-04-26 | Jakarta 1 10K | R16 | hard | So Jung Kim | 3-6 6-2 6-1 |
| 2003-11-03 | Manila 10K | SF | clay | Sandy Gumulya | 6-4 6-1 |
Averages over each player's completed matches in the selected window (5 vs 2). 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