| Men's Singles | |
|---|---|
| 2017 Ricoh Open | |
| Champion |
|
| Runner-up |
|
| Final score | 7–6(7–5), 7–6(7–4) |
| Draw | 28 (4Q / 3WC) |
| Seeds | 8 |
Nicolas Mahut was the two-time defending champion, but lost in the second round to Julien Benneteau.
Gilles Müller won the title, defeating Ivo Karlović in the final, 7–6(7–5), 7–6(7–4).
The top four seeds receive a bye into the second round.