Hyun Woo Nam defeated Cheong Eui Kim 7-6 7-6 in the Korea F6 qualifying round on hard. The upset overturned the form book — Cheong Eui Kim came in leading the head-to-head 4–1. Hyun Woo Nam narrowed the head-to-head to 4–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2016-06-20 | Korea F2 | QF | hard | Cheong Eui Kim | 6-3 6-0 |
| 2015-08-24 | Korea F5 | R32 | hard | Cheong Eui Kim | 6-2 4-6 6-3 |
| 2014-06-23 | Korea F7 | QF | hard | Cheong Eui Kim | 7-6(2) 3-0 |
| 2013-06-17 | Korea F7 | R16 | hard | Cheong Eui Kim | 7-6(5) 6-3 |
| 2007-05-07 | Korea Rep F3 | R16 | hard | Hyun Woo Nam | 1-6 6-2 6-4 |
Averages over each player's completed matches in the selected window (13 vs 196). 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