Kei Nishikori Singles: 5 (3 Titles, 2 Runner-ups) Singles: 5 (3 Titles, 2 Runner-ups)

| Outcome | Date_ | Surface | Opponent_in_the_final | Score_in_the_final |
|---|---|---|---|---|
| Winner | 11 February 2008 | Hard | James Blake | 3–6, 6–1, 6–4 |
| Runner-up | 10 April 2011 | Clay | Ryan Sweeting | 4–6, 6–7 (3–7) |
| Runner-up | 6 November 2011 | Hard (i) | Roger Federer | 1–6, 3–6 |
| Winner | 7 October 2012 | Hard | Milos Raonic | 7–6 (7–5) , 3–6, 6–0 |
| Winner | 24 February 2013 | Hard (i) | Feliciano López | 6–2, 6–3 |