Tasuku Iwami defeated Yong Il Yoon 6-1 6-2 in the Japan F1 round of 16 on carpet. The upset overturned the form book — Yong Il Yoon came in leading the head-to-head 1–0, but Tasuku Iwami had been the form player, winning 4 of their last 5 on carpet. Tasuku Iwami claimed a first win over Yong Il Yoon in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2003-05-12 | Korea Rep F3 | QF | hard | Yong Il Yoon | 6-4 5-7 7-6(3) |
Averages over each player's completed matches in the selected window (4 vs 7). 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. About