Keita Koyama defeated Masato Shiga 5-7 7-5 6-3 in the Japan F1 round of 32 on hard. The result followed the form book — Keita Koyama came in leading the head-to-head 1–0. Keita Koyama extended the head-to-head to 2–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2014-06-02 | Japan F5 | R16 | clay | Keita Koyama | 4-6 6-4 6-3 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.