Young Jun Kim defeated Tasuku Iwami 4-6 6-1 7-6 in the Japan F4 semi-final on hard. The result followed the form book — Young Jun Kim came in leading the head-to-head 2–1. Young Jun Kim extended the head-to-head to 3–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2008-06-09 | Japan F4 | QF | clay | Young Jun Kim | 4-6 6-2 7-5 |
| 2008-05-12 | Korea Rep F3 | R32 | hard | Young Jun Kim | 6-4 6-4 |
| 2002-07-29 | Korea Rep F3 | QF | hard | Tasuku Iwami | 3-6 7-6(3) 6-0 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.