Select tournament type
| 1/8-finals | Tokuda R. | Nakagawa S. | 2:0 (7:5, 6:3) | details | 18.06.2026 | ||
| 1/16-finals | Fukuda S. | Nakagawa S. | 0:2 (3:6, 66:7) | details | 17.06.2026 | ||
| 1/16-finals | Nakagawa S. | Sinclair C. | 0:2 (3:6, 64:7) | details | 03.06.2026 | ||
| Final | Imamura M. | Nakagawa S. | 2:0 (6:3, 6:4) | details | 13.04.2026 | ||
| Semi-finals | Nakagawa S. | Dev S D P. | 2:0 (6:3, 6:4) | details | 12.04.2026 | ||
| Semi-finals | Nakagawa S. | Mochizuki Y. | 0:2 (2:6, 5:7) | details | 29.03.2026 | ||
| Semi-finals | Nakagawa S. | Overbeck C. E. | 1:2 (6:4, 1:6, 2:6) | details | 22.03.2026 | ||
| Semi-finals | Nakagawa S. | Kumasaka T. | 0:2 (64:7, 3:6) | details | 02.03.2026 | ||
| Final | Watt J. | Nakagawa S. | 2:0 (6:3, 6:4) | details | 05.01.2026 | ||
| Semi-finals | Boivin L. | Nakagawa S. | 0:2 (3:6, 0:6) | details | 04.01.2026 | ||
| Semi-finals | Loof T. | Nakagawa S. | 2:1 (64:7, 6:2, 6:4) | details | 16.11.2025 | ||
| 1/8-finals | Nakagawa S. | Peniston R. | 1:2 (2:6, 7:61, 3:6) | details | 06.11.2025 | ||
| 1/16-finals | Shin S. | Nakagawa S. | 1:2 (6:2, 5:7, 3:6) | details | 04.11.2025 | ||
| Final | Kikuchi Y. | Nakagawa S. | 0:2 (3:6, 5:7) | details | 03.11.2025 | ||
| Semi-finals | Nakagawa S. | Kawahashi Y. | 2:0 (6:3, 6:1) | details | 02.11.2025 | ||
| 1/8-finals | Tanuma R. | Nakagawa S. | 2:1 (6:3, 64:7, 6:3) | details | 23.10.2025 | ||
| 1/16-finals | Horiuchi R. | Nakagawa S. | 0:2 (63:7, 2:6) | details | 22.10.2025 | ||
| Quarter-finals | Nakagawa S. | Uchida K. | 0:2 (1:6, 0:6) | details | 12.09.2025 | ||
| 1/8-finals | Takahashi Y. | Nakagawa S. | 0:2 (66:7, 64:7) | details | 11.09.2025 | ||
| 1/16-finals | Takamisawa T. | Nakagawa S. | 0:2 (4:6, 63:7) | details | 10.09.2025 | ||
| Quarter-finals | Delaney Ja./Nakagawa S. | Fukuda S./Nakagawa N. | 2:1 (62:7, 6:1, 10:8) | details | 18.06.2026 | ||
| 1/8-finals | Delaney Ja./Nakagawa S. | Nakamoto R./Okabe S. | 2:0 (6:3, 7:63) | details | 17.06.2026 | ||
| Final | Kusuhara Y./Nakagawa S. | Delaney Je./Sach T. | 2:0 (6:4, 6:4) | details | 06.06.2026 | ||
| Semi-finals | Kusuhara Y./Nakagawa S. | Arcon A./Storch S. | 2:0 (7:5, 7:62) | details | 05.06.2026 | ||
| Quarter-finals | Kusuhara Y./Nakagawa S. | Ikeda Y./Vickery L. | 2:0 (6:2, 6:2) | details | 04.06.2026 | ||
| 1/8-finals | Kusuhara Y./Nakagawa S. | Matsui T./Noguchi M. | 2:0 (6:4, 6:4) | details | 03.06.2026 | ||
| 1/8-finals | Kusuhara Y./Nakagawa S. | Jung J./Uesugi K. | 1:2 (7:67, 3:6, 6:10) | details | 30.04.2026 | ||
| 1/8-finals | Barry C./Broom C. | Kusuhara Y./Nakagawa S. | 2:0 (6:3, 6:4) | details | 16.04.2026 | ||
| Semi-finals | Nam Ji S./Niklas-Salminen P. | Kusuhara Y./Nakagawa S. | 2:0 (6:3, 7:66) | details | 03.04.2026 | ||
| Quarter-finals | Kusuhara Y./Nakagawa S. | Hsu J./Ilagan A. | 2:0 (6:3, 7:5) | details | 02.04.2026 | ||
| 1/8-finals | Nedunchezhiyan J./Ramanathan R. | Kusuhara Y./Nakagawa S. | 0:2 (2:6, 4:6) | details | 01.04.2026 | ||
| Quarter-finals | Boulais J./Niklas-Salminen P. | Kusuhara Y./Nakagawa S. | 2:0 (7:63, 6:4) | details | 27.03.2026 | ||
| 1/8-finals | Kusuhara Y./Nakagawa S. | Nam Ji S./Park U. | 2:1 (4:6, 7:5, 10:6) | details | 24.03.2026 | ||
| 1/8-finals | Kusuhara Y./Nakagawa S. | Hewitt C./Kubler J. | CAN. | details | 04.03.2026 | ||
| Final | Delaney Ja./Puttergill C. | Kusuhara Y./Nakagawa S. | 0:2 (5:7, 3:6) | details | 09.01.2026 | ||
| Semi-finals | Kusuhara Y./Nakagawa S. | Reynolds F./Watt J. | 2:1 (7:64, 4:6, 10:7) | details | 08.01.2026 | ||
| Quarter-finals | Ogura K./Vithoontien L. | Kusuhara Y./Nakagawa S. | 0:2 (4:6, 5:7) | details | 07.01.2026 | ||
| 1/8-finals | Langmo C./Tomic B. | Kusuhara Y./Nakagawa S. | 1:2 (66:7, 7:5, 14:16) | details | 05.01.2026 | ||
| Quarter-finals | Kusuhara Y./Nakagawa S. | Oberleitner N./Vrbensky M. | 0:2 (3:6, 3:6) | details | 20.11.2025 | ||
| 1/8-finals | Ho R./Santillan A. | Kusuhara Y./Nakagawa S. | 0:2 (2:6, 5:7) | details | 19.11.2025 | ||
| 1/8-finals | Kusuhara Y./Nakagawa S. | Mochizuki Y./Taguchi R. | 0:2 (4:6, 3:6) | details | 03.11.2025 | ||
| Final | Nakagawa S./Takahata R. | Ichikawa T./Sueoka Y. | 0:2 (4:6, 3:6) | details | 24.10.2025 | ||
| Semi-finals | Kono Y./Kusuhara Y. | Nakagawa S./Takahata R. | 0:2 (61:7, 4:6) | details | 24.10.2025 | ||
| Quarter-finals | Nakagawa S./Takahata R. | Karigyo T./Shibano K. | 2:0 (6:2, 6:4) | details | 23.10.2025 | ||
| 1/8-finals | Nakagawa S./Takahata R. | Komatsu N./Sampei R. | 2:0 (6:3, 6:1) | details | 22.10.2025 | ||
| Quarter-finals | Nakagawa S./Uchida K. | Mochizuki Y./Noguchi M. | 1:2 (7:61, 2:6, 4:10) | details | 11.09.2025 | ||
| 1/8-finals | Nakagawa S./Uchida K. | Matsumura R./Mridha J. | 2:0 (6:3, 6:3) | details | 09.09.2025 | ||
| Final | Hazawa S./Mochizuki Y. | Kusuhara Y./Nakagawa S. | 1:2 (6:3, 63:7, 9:11) | details | 06.09.2025 | ||
| Semi-finals | Ogura K./Shiraishi H. | Kusuhara Y./Nakagawa S. | 0:2 (1:6, 2:6) | details | 05.09.2025 | ||
| Quarter-finals | Koyama H./Takahashi Y. | Kusuhara Y./Nakagawa S. | 0:2 (3:6, 4:6) | details | 04.09.2025 | ||