| Singles | |
|---|---|
| 2014 Rakuten Japan Open Tennis Championships | |
| Champion |
|
| Runner-up |
|
| Final score | 7–6(7–5), 4–6, 6–4 |
Juan Martín del Potro was the defending champion, but withdrew with a wrist injury.
Kei Nishikori won the title, defeating Milos Raonic in the final, 7–6(7–5), 4–6, 6–4.