Select tournament type
| Final | Imai S. | Moriya H. | 1:2 (6:3, 66:7, 1:6) | details | 05.01.2026 | ||
| Semi-finals | Zhukov M. | Imai S. | 0:2 (4:6, 4:6) | details | 04.01.2026 | ||
| Quarter-finals | Matsuoka S. | Imai S. | 1:0 RET. (7:62, 0:0) | details | 08.08.2025 | ||
| 1/8-finals | Barki J. | Imai S. | 0:2 (4:6, 4:6) | details | 07.08.2025 | ||
| 1/16-finals | Kono Y. | Imai S. | 0:2 (1:6, 1:6) | details | 06.08.2025 | ||
| Semi-finals | Imai S. | Budkov Kjaer N. | 0:2 (3:6, 5:7) | details | 02.08.2025 | ||
| Quarter-finals | Imai S. | Bakshi A. | 2:1 (2:6, 6:4, 6:4) | details | 01.08.2025 | ||
| 1/8-finals | Winter E. | Imai S. | 0:2 (64:7, 3:6) | details | 30.07.2025 | ||
| 1/16-finals | Imai S. | Omarkhanov A. | 2:0 (6:2, 7:64) | details | 29.07.2025 | ||
| Final | Tokuda R. | Imai S. | 2:0 (6:3, 6:2) | details | 13.07.2025 | ||
| Semi-finals | Imai S. | Isomura K. | 2:1 (6:4, 65:7, 6:4) | details | 12.07.2025 | ||
| Quarter-finals | Kirci K. | Imai S. | 0:2 (1:6, 60:7) | details | 11.07.2025 | ||
| 1/8-finals | Tanuma R. | Imai S. | 1:2 (6:3, 64:7, 64:7) | details | 10.07.2025 | ||
| 1/16-finals | Masabayashi T. | Imai S. | 0:2 (69:7, 62:7) | details | 09.07.2025 | ||
| 1/8-finals | Imai S. | Lu P. | 0:2 (5:7, 0:6) | details | 03.07.2025 | ||
| 1/16-finals | Imai S. | Dong C. | 2:0 (6:4, 6:2) | details | 02.07.2025 | ||
| 1/16-finals | Castelnuovo L. | Imai S. | 2:0 (6:4, 6:2) | details | 25.06.2025 | ||
| Quarter-finals | Cui J. | Imai S. | 2:0 (6:2, 6:3) | details | 20.06.2025 | ||
| 1/8-finals | Chanta T. | Imai S. | 1:2 (7:64, 2:6, 1:6) | details | 19.06.2025 | ||
| 1/16-finals | Chappell N. | Imai S. | 0:1 RET. (1:6, 0:0) | details | 18.06.2025 | ||
| 1/16-finals | Imai S. | Chanta T. | 0:1 RET. (1:6, 1:3) | details | 04.06.2025 | ||
| 1/16-finals | Li Z. | Imai S. | 2:0 (6:3, 7:65) | details | 06.05.2025 | ||
| Final | Chung H. | Imai S. | 1:2 (6:0, 4:6, 3:6) | details | 05.05.2025 | ||
| Semi-finals | Imai S. | Shin W. | 2:0 (6:2, 6:4) | details | 04.05.2025 | ||
| Final | Takahashi Y. | Imai S. | 0:2 (3:6, 3:6) | details | 27.04.2025 | ||
| Semi-finals | Imai S. | Yamasaki J. | 2:0 (6:4, 6:1) | details | 26.04.2025 | ||
| Quarter-finals | Imai S. | Kumasaka T. | WO. | details | 25.04.2025 | ||
| 1/8-finals | Imai S. | Huang T. | 2:0 (6:0, 6:2) | details | 24.04.2025 | ||
| 1/16-finals | Imai S. | Tokuda R. | 2:0 (6:1, 6:3) | details | 22.04.2025 | ||
| Quarter-finals | Rifqi Fitriadi M. | Imai S. | 2:0 (7:5, 6:3) | details | 28.03.2025 | ||
| 1/8-finals | Kopeikin V. | Imai S. | 1:2 (2:6, 6:4, 3:6) | details | 27.03.2025 | ||
| 1/16-finals | Congcar C. | Imai S. | 0:2 (4:6, 1:6) | details | 26.03.2025 | ||
| Quarter-finals | Santillan A. | Imai S. | 2:1 (4:6, 7:64, 7:5) | details | 21.03.2025 | ||
| 1/8-finals | Takahashi Y. | Imai S. | 0:2 (4:6, 4:6) | details | 20.03.2025 | ||
| 1/16-finals | Imai S. | Isomura K. | 2:1 (6:2, 65:7, 6:4) | details | 18.03.2025 | ||
| 1/8-finals | Chanta T. | Imai S. | 2:1 (6:2, 1:6, 7:65) | details | 13.03.2025 | ||
| 1/16-finals | Tabacco F. | Imai S. | 0:2 (2:6, 4:6) | details | 11.03.2025 | ||
| 1/8-finals | Imai S. | Kubler J. | 0:2 (3:6, 3:6) | details | 27.02.2025 | ||
| 1/16-finals | Ogura K. | Imai S. | 0:2 (0:6, 63:7) | details | 25.02.2025 | ||
| Semi-finals | Charoenphon Y./Samrej K. | Imai S./Sueoka Y. | 2:0 (6:3, 6:4) | details | 08.08.2025 | ||
| Quarter-finals | Shanmugam A./Sureshkumar M. | Imai S./Sueoka Y. | 1:2 (5:7, 6:4, 7:10) | details | 07.08.2025 | ||
| 1/8-finals | Jimenez M. D./Yasin J. | Imai S./Sueoka Y. | 0:2 (2:6, 1:6) | details | 05.08.2025 | ||
| 1/8-finals | Ichikawa T./Imai S. | Castelnuovo L./Tang S. | 1:2 (4:6, 7:65, 9:11) | details | 25.06.2025 | ||
| Semi-finals | Huang T./Imai S. | Jeong Y./Park U. | 1:2 (66:7, 6:3, 6:10) | details | 20.06.2025 | ||
| Quarter-finals | Huang T./Imai S. | Trongcharoenchaikul W./Yang Z. | 2:1 (4:6, 6:3, 10:8) | details | 19.06.2025 | ||
| 1/8-finals | Masabayashi T./Mochizuki Y. | Huang T./Imai S. | 1:2 (66:7, 6:1, 7:10) | details | 17.06.2025 | ||
| Quarter-finals | Jeong Y./Park U. | Imai S./Matsuda R. | WO. | details | 05.06.2025 | ||
| 1/8-finals | Imai S./Matsuda R. | Kikuchi Y./Masabayashi T. | 2:0 (7:67, 6:4) | details | 03.06.2025 | ||
| 1/8-finals | Hsu Y. H./Imai S. | Hsieh C./Wang A. | 0:2 (3:6, 62:7) | details | 18.03.2025 | ||
| 1/8-finals | Hsu Y. H./Huang T. | Hazawa S./Imai S. | 2:0 (6:3, 7:5) | details | 26.02.2025 | ||