Guilherme Ochiai defeated Hyun Woo Nam 7-6 6-1 in the Japan F4 round of 16 on hard. Guilherme Ochiai extended the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2007-04-02 | Japan F3 | R32 | carpet | Guilherme Ochiai | 6-4 6-4 |
| 2006-02-20 | India 1 4 | R16 | hard | Hyun Woo Nam | 2-6 6-2 6-4 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.