United Kingdom: London - Singles - Qualification |
| Semi-finals | Hijikata R. | Clarke J. | CAN. | dettagli | 14.06.2025 |
Netherlands: Hertogenbosch - Singles - Main |
| 1/16-finals | Hijikata R. | Evans D. | 1:2 (6:3, 4:6, 3:6) | dettagli | 11.06.2025 |
United Kingdom: Birmingham - Singles - Main |
| Semi-finals | Smith C. | Hijikata R. | 2:0 (6:3, 6:4) | dettagli | 08.06.2025 |
| Quarter-finals | Hijikata R. | Bolt A. | 2:0 (7:62, 6:4) | dettagli | 06.06.2025 |
| 1/8-finals | Hijikata R. | Watanuki Y. | 2:0 (6:1, 6:3) | dettagli | 04.06.2025 |
| 1/16-finals | Hijikata R. | Harris B. | 2:1 (6:1, 3:6, 6:4) | dettagli | 02.06.2025 |
France: French Open - Singles - Main |
| 1/64-finals | Opelka R. | Hijikata R. | 3:1 (1:6, 6:3, 7:5, 7:63) | dettagli | 25.05.2025 |
France: Bordeaux - Singles - Main |
| Semi-finals | Mpetshi Perricard G. | Hijikata R. | 2:0 (7:5, 7:65) | dettagli | 17.05.2025 |
| Quarter-finals | Hassan B. | Hijikata R. | 0:2 (4:6, 63:7) | dettagli | 16.05.2025 |
| 1/8-finals | Hijikata R. | Baez S. | 2:1 (6:4, 3:6, 6:2) | dettagli | 15.05.2025 |
| 1/16-finals | Hijikata R. | Basavareddy N. | 2:1 (6:3, 4:6, 6:4) | dettagli | 14.05.2025 |
Italy: Rome - Singles - Main |
| 1/64-finals | Hijikata R. | Moutet C. | 1:2 (6:3, 1:6, 5:7) | dettagli | 07.05.2025 |
Spain: Madrid - Singles - Main |
| 1/64-finals | Opelka R. | Hijikata R. | 2:0 (7:5, 7:5) | dettagli | 24.04.2025 |
Spain: Madrid - Singles - Qualification |
| Final | Hijikata R. | Fognini F. | 1:2 (4:6, 7:5, 5:7) | dettagli | 22.04.2025 |
| Semi-finals | Hijikata R. | Harris L. | 1:1 RET. (6:4, 611:7, 4:1) | dettagli | 21.04.2025 |
Germany: Munich - Singles - Qualification |
| Semi-finals | Shevchenko A. | Hijikata R. | 2:1 (6:4, 1:6, 6:3) | dettagli | 12.04.2025 |
USA: Houston - Singles - Main |
| 1/16-finals | Hijikata R. | Eubanks C. | 1:2 (2:6, 6:4, 3:6) | dettagli | 02.04.2025 |
USA: Miami - Singles - Main |
| 1/32-finals | Hijikata R. | Djokovic N. | 0:2 (0:6, 61:7) | dettagli | 21.03.2025 |
| 1/64-finals | Hijikata R. | Medjedovic H. | 2:1 (7:5, 3:6, 7:5) | dettagli | 19.03.2025 |
USA: Phoenix - Singles - Main |
| 1/8-finals | Hijikata R. | Bublik A. | 1:2 (2:6, 7:5, 3:6) | dettagli | 13.03.2025 |
| 1/16-finals | Hijikata R. | Holt B. | 2:0 (7:60, 7:63) | dettagli | 12.03.2025 |
USA: Indian Wells - Singles - Main |
| 1/32-finals | Hijikata R. | Nakashima B. | 0:2 (5:7, 1:6) | dettagli | 09.03.2025 |
| 1/64-finals | Shevchenko A. | Hijikata R. | 0:2 (1:6, 3:6) | dettagli | 06.03.2025 |
Mexico: Acapulco - Singles - Main |
| 1/16-finals | Goffin D. | Hijikata R. | 2:0 (6:2, 6:3) | dettagli | 25.02.2025 |
Mexico: Acapulco - Singles - Qualification |
| Semi-finals | Hijikata R. | Kozlov S. | CAN. | dettagli | 23.02.2025 |
USA: Delray Beach - Singles - Main |
| 1/16-finals | Bu Y. | Hijikata R. | 2:0 (6:2, 6:0) | dettagli | 11.02.2025 |
USA: Dallas - Singles - Main |
| 1/8-finals | Hijikata R. | Machac T. | 0:2 (4:6, 60:7) | dettagli | 06.02.2025 |
| 1/16-finals | Hijikata R. | Mannarino A. | 2:0 (7:5, 6:3) | dettagli | 03.02.2025 |
Australia: Brisbane - Singles - Main |
| 1/8-finals | Hijikata R. | McCabe J. | 0:2 (4:6, 5:7) | dettagli | 29.01.2025 |
| 1/16-finals | Hijikata R. | Jones H. | 2:1 (63:7, 6:4, 6:0) | dettagli | 27.01.2025 |
Australia: Australian Open - Singles - Main |
| 1/64-finals | Hijikata R. | Krueger M. | 0:3 (4:6, 4:6, 3:6) | dettagli | 14.01.2025 |
Australia: Adelaide - Singles - Main |
| Quarter-finals | Paul T. | Hijikata R. | 2:0 (6:3, 6:4) | dettagli | 09.01.2025 |
| 1/8-finals | Hijikata R. | Nakashima B. | 2:1 (6:2, 3:6, 7:65) | dettagli | 08.01.2025 |
| 1/16-finals | Goffin D. | Hijikata R. | 0:2 (1:6, 2:6) | dettagli | 07.01.2025 |
Australia: Adelaide - Singles - Qualification |
| Final | Hijikata R. | Walton A. | 1:2 (6:1, 64:7, 4:6) | dettagli | 06.01.2025 |
| Semi-finals | Hijikata R. | Jasika O. | 1:0 RET. (6:0, 2:1) | dettagli | 05.01.2025 |