Select tournament type
| 1/16-finals | Shiraishi H. | Hayashi K. | 2:0 (6:2, 6:2) | details | 09.07.2025 | ||
| 1/16-finals | Suzuki K. | Hayashi K. | 2:0 (6:3, 6:3) | details | 04.06.2025 | ||
| 1/16-finals | Hayashi K. | Huang T. | 0:2 (1:6, 0:6) | details | 26.03.2025 | ||
| 1/16-finals | Hayashi K. | Becroft I. | 1:2 (1:6, 7:65, 64:7) | details | 17.12.2024 | ||
| 1/16-finals | Pannu K. | Hayashi K. | 2:0 (7:5, 6:2) | details | 10.12.2024 | ||
| Semi-finals | Sekulic P. | Hayashi K. | 2:0 (6:2, 6:1) | details | 17.11.2024 | ||
| 1/16-finals | Kusuhara Y. | Hayashi K. | 2:1 (7:5, 4:6, 6:1) | details | 30.10.2024 | ||
| 1/16-finals | Hayashi K. | Muto S. | 0:2 (61:7, 5:7) | details | 24.10.2024 | ||
| 1/16-finals | Hayashi K. | Ogura K. | 0:2 (3:6, 4:6) | details | 10.09.2024 | ||
| 1/16-finals | Hayashi K. | Ito T. | 1:2 (4:6, 6:3, 1:6) | details | 05.06.2024 | ||
| 1/8-finals | Hayashi K. | Uchida K. | 0:2 (5:7, 62:7) | details | 30.05.2024 | ||
| 1/16-finals | Hayashi K. | Hazawa S. | 2:1 (3:6, 6:4, 10:8) | details | 29.05.2024 | ||
| 1/8-finals | Delaney Ja. | Hayashi K. | 2:0 (6:2, 6:4) | details | 04.04.2024 | ||
| 1/16-finals | Hayashi K. | Ito T. | 2:1 (6:4, 67:7, 7:64) | details | 02.04.2024 | ||
| Semi-finals | Hayashi K. | Tanuma R. | 0:2 (2:6, 1:6) | details | 30.10.2022 | ||
| Semi-finals | Hayashi K./Sugaya Y. | Kono Y./Tanaka Y. | 0:2 (4:6, 5:7) | details | 06.06.2025 | ||
| Quarter-finals | Delaney Ja./Delaney Je. | Hayashi K./Sugaya Y. | 0:2 (4:6, 2:6) | details | 06.06.2025 | ||
| 1/8-finals | Hayashi K./Sugaya Y. | Gibson J. L./Singh A. J. | 2:0 (6:0, 6:3) | details | 05.06.2025 | ||
| Semi-finals | Hayashi K./Nishiwaki K. | Kusuhara Y./Noguchi M. | 1:2 (6:4, 0:6, 8:10) | details | 25.04.2025 | ||
| Quarter-finals | Huang T./Ichikawa T. | Hayashi K./Nishiwaki K. | 1:0 RET. (6:0, 1:1) | details | 24.04.2025 | ||
| 1/8-finals | Adachi T./Kojima R. | Hayashi K./Nishiwaki K. | 0:2 (2:6, 3:6) | details | 24.04.2025 | ||
| Quarter-finals | Kono Y./Okamura I. | Hayashi K./Sach T. | 2:1 (6:0, 2:6, 10:6) | details | 14.03.2025 | ||
| 1/8-finals | Hayashi K./Sach T. | Sueoka Y./Sumizawa D. | 2:1 (6:3, 4:6, 10:4) | details | 11.03.2025 | ||
| 1/8-finals | Horoz A./Ilkel C. | Hayashi K./Valsecchi P. | 2:0 (6:2, 6:2) | details | 14.01.2025 | ||
| 1/8-finals | Hayashi K./Ryan Ziegann S. | Matta A./Taylor A. | 1:2 (7:5, 3:6, 7:10) | details | 17.12.2024 | ||
| 1/8-finals | Hayashi K./Voisin A. | Court J./Hoole C. | 0:2 (1:6, 1:6) | details | 10.12.2024 | ||
| 1/8-finals | Hayashi K./Yamanaka T. | Fukuda S./Kawahashi Y. | 0:2 (1:6, 62:7) | details | 30.10.2024 | ||
| 1/8-finals | Choe J./Shin W. | Chaiyarin C./Hayashi K. | 2:0 (6:3, 7:5) | details | 22.10.2024 | ||
| 1/8-finals | Watanabe S./Yuzuki T. | Hayashi K./Takamisawa T. | 2:0 (6:3, 6:0) | details | 18.09.2024 | ||
| 1/8-finals | Kono Y./Kusuhara Y. | Hayashi K./Jang Y. | 2:1 (5:7, 6:2, 10:8) | details | 09.07.2024 | ||
| Quarter-finals | Fukuda S./Isomura K. | Hayashi K./Kusuhara Y. | 2:0 (6:3, 6:4) | details | 06.06.2024 | ||
| 1/8-finals | Hayashi K./Kusuhara Y. | Atturu B. S./Schembari A. | 2:0 (6:2, 6:0) | details | 04.06.2024 | ||
| 1/8-finals | Kusuhara Y./Nakagawa S. | Hayashi K./Sugaya Y. | 2:1 (7:5, 3:6, 10:5) | details | 29.05.2024 | ||