Guilherme Ochiai defeated Kento Takeuchi 6-4 6-0 in the Japan F4 round of 32 on hard. The upset overturned the form book — Kento Takeuchi came in leading the head-to-head 1–0, but Guilherme Ochiai had been the form player, winning 4 of their last 8 on hard. Guilherme Ochiai claimed a first win over Kento Takeuchi in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2006-05-08 | Indonesia 1 2 | R16 | hard | Kento Takeuchi | 6-3 6-4 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.