Sandy Gumulya defeated So Jung Kim 7-5 6-4 in the Bali round of 32 on hard. The upset overturned the form book — So Jung Kim came in leading the head-to-head 2–1, but Sandy Gumulya had been the form player, winning 7 of their last 10 on hard. Sandy Gumulya narrowed the head-to-head to 2–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2004-04-26 | Jakarta 1 10K | R16 | hard | So Jung Kim | 3-6 6-2 6-1 |
| 2003-11-10 | Manila 10K | R16 | clay | So Jung Kim | 6-2 4-6 7-5 |
| 2003-11-03 | Manila 10K | SF | clay | Sandy Gumulya | 6-4 6-1 |
Averages over each player's completed matches in the selected window (2 vs 5). 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