Finland: Helsinki - Singles - Main |
| Final | Nishikori K. | Nardi L. | 2:1 (3:6, 6:4, 6:1) | details | 10.11.2024 |
| Semi-finals | Rehberg M. H. | Nishikori K. | 1:2 (4:6, 7:66, 2:6) | details | 09.11.2024 |
| Quarter-finals | Fearnley J. | Nishikori K. | 0:2 (4:6, 3:6) | details | 08.11.2024 |
| 1/8-finals | Nishikori K. | Kym J. | 2:1 (6:3, 1:6, 6:2) | details | 07.11.2024 |
| 1/16-finals | Nishikori K. | Alvarez Varona N. | 2:0 (6:4, 6:2) | details | 06.11.2024 |
Slovakia: Bratislava 2 - Singles - Main |
| Semi-finals | Safiullin R. | Nishikori K. | 2:0 (6:4, 6:3) | details | 02.11.2024 |
| Quarter-finals | Nishikori K. | Lestienne C. | 2:1 (6:3, 5:7, 6:2) | details | 01.11.2024 |
| 1/8-finals | Nishikori K. | Klein L. | 2:1 (6:3, 63:7, 6:1) | details | 31.10.2024 |
| 1/16-finals | Fucsovics M. | Nishikori K. | 1:2 (2:6, 6:1, 1:6) | details | 29.10.2024 |
Austria: Vienna - Singles - Main |
| 1/16-finals | Nishikori K. | Draper J. | 0:2 (65:7, 5:7) | details | 22.10.2024 |
China: Shanghai - Singles - Main |
| 1/32-finals | Tsitsipas S. | Nishikori K. | 2:0 (7:66, 6:4) | details | 04.10.2024 |
| 1/64-finals | Nishikori K. | Navone M. | 2:1 (3:6, 6:4, 6:3) | details | 02.10.2024 |
Japan: Tokyo - Singles - Main |
| Quarter-finals | Nishikori K. | Rune H. | 1:2 (6:3, 2:6, 5:7) | details | 29.09.2024 |
| 1/8-finals | Thompson J. | Nishikori K. | 0:2 (2:6, 3:6) | details | 28.09.2024 |
| 1/16-finals | Cilic M. | Nishikori K. | 1:2 (4:6, 6:3, 3:6) | details | 26.09.2024 |
China: Chengdu - Singles - Main |
| 1/16-finals | Shang J. | Nishikori K. | 2:0 (6:4, 6:4) | details | 19.09.2024 |
World: Davis Cup - World Group I - Singles - Main |
| | Nishikori K. | Soriano Barrera A. | CAN. | details | 15.09.2024 |
| | Nishikori K. | Mejia N. | 2:0 (6:4, 6:4) | details | 14.09.2024 |
Italy: Genova - Singles - Main |
| Quarter-finals | Munar J. | Nishikori K. | 2:1 (2:6, 7:5, 6:3) | details | 06.09.2024 |
| 1/8-finals | Nishikori K. | Varillas J. P. | 2:0 (6:2, 6:3) | details | 05.09.2024 |
| 1/16-finals | Nishikori K. | Dellavedova M. | 2:0 (6:4, 6:4) | details | 03.09.2024 |
Italy: Como - Singles - Main |
| Quarter-finals | Nishikori K. | Debru G. | WO. | details | 30.08.2024 |
| 1/8-finals | Basilashvili N. | Nishikori K. | 0:1 RET. (1:6, 1:3) | details | 29.08.2024 |
| 1/16-finals | Nishikori K. | Vincent Ruggeri S. | 2:0 (6:2, 6:1) | details | 27.08.2024 |
Canada: Montreal - Singles - Main |
| Quarter-finals | Arnaldi M. | Nishikori K. | 2:0 (6:4, 7:5) | details | 11.08.2024 |
| 1/8-finals | Borges N. | Nishikori K. | 0:2 (3:6, 4:6) | details | 10.08.2024 |
| 1/16-finals | Nishikori K. | Tsitsipas S. | 2:0 (6:4, 6:4) | details | 08.08.2024 |
| 1/32-finals | Michelsen A. | Nishikori K. | 1:2 (6:3, 5:7, 4:6) | details | 06.08.2024 |
World: Olympic Games - Singles - Main |
| 1/32-finals | Draper J. | Nishikori K. | 2:0 (6:1, 6:4) | details | 28.07.2024 |
United Kingdom: Wimbledon - Singles - Main |
| 1/64-finals | Nishikori K. | Rinderknech A. | 2:3 (7:5, 4:6, 7:62, 3:6, 2:6) | details | 03.07.2024 |
United Kingdom: Eastbourne - Singles - Main |
| 1/16-finals | Navone M. | Nishikori K. | CAN. | details | 25.06.2024 |
France: French Open - Singles - Main |
| 1/32-finals | Shelton B. | Nishikori K. | 2:0 RET. (7:67, 6:4, 0:0) | details | 30.05.2024 |
| 1/64-finals | Nishikori K. | Diallo G. | 3:2 (7:5, 7:63, 3:6, 1:6, 7:5) | details | 26.05.2024 |
USA: Miami - Singles - Main |
| 1/64-finals | Ofner S. | Nishikori K. | 2:0 (6:3, 6:4) | details | 21.03.2024 |
USA: US Open - Singles - Main |
| 1/64-finals | Nishikori K. | Meligeni Alves F. | CAN. | details | 29.08.2023 |
USA: Washington - Singles - Main |
| 1/32-finals | Harris L. | Nishikori K. | CAN. | details | 01.08.2023 |
USA: Atlanta - Singles - Main |
| Quarter-finals | Fritz T. | Nishikori K. | 2:0 (6:4, 6:2) | details | 28.07.2023 |
| 1/8-finals | Nishikori K. | Shang J. | 2:0 (6:4, 7:63) | details | 28.07.2023 |
| 1/16-finals | Thompson J. | Nishikori K. | 0:2 (65:7, 65:7) | details | 25.07.2023 |
USA: Chicago - Singles - Main |
| Quarter-finals | Nishikori K. | Michelsen A. | 1:2 (613:7, 6:3, 1:6) | details | 14.07.2023 |
| 1/8-finals | Nishikori K. | Mansouri S. | 2:0 (7:61, 6:4) | details | 14.07.2023 |
| 1/16-finals | Galarneau A. | Nishikori K. | 0:2 (63:7, 1:6) | details | 12.07.2023 |
USA: Bloomfield Hills - Singles - Main |
| 1/8-finals | Kudla D. | Nishikori K. | 2:1 (6:4, 3:6, 6:3) | details | 06.07.2023 |
| 1/16-finals | Nishikori K. | Walton A. | 2:0 (6:1, 6:2) | details | 04.07.2023 |
Puerto Rico: Palmas Del Mar - Singles - Main |
| Final | Zheng M. | Nishikori K. | 0:2 (2:6, 5:7) | details | 18.06.2023 |