ATP Tennis - Kei Nishikori
- Tournament: N/A
- Round: N/A
- Opponent: N/A
- DOB: 1989-12-29
- Birthplace: Japan, Japan
- Height: 70.0 cm
- Weight: 165.0 kg
- Plays: R
- Current World Rank: 31
- Hard: 242-119
- Clay: 92-38
- Grass: 35-25
| Tournament | Date | Sets | Round | Winner | Loser |
|---|---|---|---|---|---|
| US Open | Aug 30, 2019 | 6-2, 6-4, 2-6, 6-3 | Third Round | Alex De Minaur | Kei Nishikori |
| US Open | Aug 28, 2019 | 6-2, 4-6, 6-3, 7-5 | Second Round | Kei Nishikori | Bradley Klahn |
| US Open | Aug 26, 2019 | 6-1, 4-1 | First Round | Kei Nishikori | Marco Trungelliti |
| Tennis Masters Cincinnati | Aug 14, 2019 | 7-6 (7-2), 6-4 | Second Round | Yoshihito Nishioka | Kei Nishikori |
| Rogers Cup | Aug 7, 2019 | 6-7 (6-8), 6-2, 7-6 (7-4) | Second Round | Richard Gasquet | Kei Nishikori |
| Wimbledon | Jul 10, 2019 | 4-6, 6-1, 6-4, 6-4 | Quarter Finals | Roger Federer | Kei Nishikori |
| Wimbledon | Jul 8, 2019 | 6-3, 3-6, 6-3, 6-4 | Fourth Round | Kei Nishikori | Mikhail Kukushkin |
| Wimbledon | Jul 6, 2019 | 6-4, 6-3, 6-2 | Third Round | Kei Nishikori | Steve Johnson |
| Wimbledon | Jul 4, 2019 | 6-4, 6-4, 6-0 | Second Round | Kei Nishikori | Cameron Norrie |
| Wimbledon | Jul 2, 2019 | 6-4, 7-6 (7-3), 6-4 | First Round | Kei Nishikori | Thiago Monteiro |
