Japan: M15 Tsukuba - Doubles - Main |
| Semi-finals | Inui Y./Kawachi K. | Hsu Y. H./Huang T. | 1:2 (7:63, 4:6, 7:10) | details | 27.03.2025 |
| Quarter-finals | Masabayashi T./Yamanaka T. | Inui Y./Kawachi K. | 0:2 (4:6, 2:6) | details | 27.03.2025 |
| 1/8-finals | Inui Y./Kawachi K. | Isomura K./Shiraishi H. | 2:0 (6:4, 7:5) | details | 25.03.2025 |
Australia: M25 Swan Hill - Doubles - Main |
| Semi-finals | Delaney Ja./Delaney Je. | Inui Y./Kawachi K. | 2:1 (7:5, 68:7, 10:8) | details | 22.03.2025 |
| Quarter-finals | Inui Y./Kawachi K. | Cook E./Sim S. | 2:0 (6:3, 6:3) | details | 21.03.2025 |
| 1/8-finals | Inui Y./Kawachi K. | Dumitru M./Kose C. | 2:0 (7:5, 6:2) | details | 18.03.2025 |
Australia: M25 Mildura - Doubles - Main |
| Quarter-finals | Bruce-Smith J./Papac T. E. | Inui Y./Kawachi K. | 2:1 (4:6, 6:3, 10:7) | details | 13.03.2025 |
| 1/8-finals | Joyce J./Young-Mathers S. | Inui Y./Kawachi K. | 0:2 (63:7, 0:6) | details | 12.03.2025 |
Japan: M15 Yanagawa City - Doubles - Main |
| Final | Katayama S./Kono Y. | Kawachi K./Matsuda K. | 2:0 (6:4, 6:2) | details | 01.11.2024 |
| Semi-finals | Oh Chan-Yeong/Park S. | Kawachi K./Matsuda K. | 1:2 (5:7, 7:64, 3:10) | details | 31.10.2024 |
| Quarter-finals | Oki Y./Yoshimura D. | Kawachi K./Matsuda K. | 1:2 (1:6, 6:2, 4:10) | details | 31.10.2024 |
| 1/8-finals | Uchida M./Ukari Y. | Kawachi K./Matsuda K. | 0:2 (4:6, 2:6) | details | 30.10.2024 |
Japan: M15 Tanagura - Doubles - Main |
| Semi-finals | Kawachi K./Suzuki K. | Sumizawa D./Yamanaka T. | 0:2 (2:6, 3:6) | details | 26.10.2024 |
| Quarter-finals | Kawachi K./Suzuki K. | Hung K. H./Yamamoto N. | 2:0 (6:3, 6:1) | details | 25.10.2024 |
| 1/8-finals | Hazawa S./Sueoka Y. | Kawachi K./Suzuki K. | 1:2 (6:3, 1:6, 3:10) | details | 24.10.2024 |
Uzbekistan: M15 Tashkent 2 - Doubles - Main |
| Quarter-finals | Kalyanpur A./Vardhan V. | Kawachi K./Shin M. | 2:0 (6:0, 6:2) | details | 05.09.2024 |
| 1/8-finals | Kawachi K./Shin M. | Tamm K./Tkemaladze Z. | 2:1 (6:4, 1:6, 10:7) | details | 03.09.2024 |
Uzbekistan: M15 Tashkent - Doubles - Main |
| 1/8-finals | Binda A./Shin M. | Kawachi K./Reddy R. | 2:1 (6:3, 2:6, 10:3) | details | 28.08.2024 |
Thailand: M15 Nakhon Si Thammarat 5 - Doubles - Main |
| 1/8-finals | Court J./Kawachi K. | Kalyanpur A./Vardhan V. | 0:2 (4:6, 3:6) | details | 11.07.2024 |
Kazakhstan: M15 Ust-Kamenogorsk 2 - Doubles - Main |
| Final | Hazawa S./Kawachi K. | Orynbasar I./Yerdilda Y. | 2:0 (6:3, 6:3) | details | 06.07.2024 |
| Semi-finals | Agafonov E./Fomin S. | Hazawa S./Kawachi K. | 1:2 (65:7, 6:4, 8:10) | details | 05.07.2024 |
| Quarter-finals | Hazawa S./Kawachi K. | Bar Biryukov P./Tiukaev R. | 2:0 (6:4, 6:2) | details | 05.07.2024 |
| 1/8-finals | Chepik A./Pokotilov B. | Hazawa S./Kawachi K. | 0:2 (3:6, 1:6) | details | 02.07.2024 |
Kazakhstan: M15 Ust-Kamenogorsk - Doubles - Main |
| Final | Khazime D./Zhukov M. | Hazawa S./Kawachi K. | 0:2 (2:6, 2:6) | details | 29.06.2024 |
| Semi-finals | Hazawa S./Kawachi K. | Borisiouk M./Chepik A. | 2:1 (6:4, 4:6, 10:7) | details | 28.06.2024 |
| Quarter-finals | Hazawa S./Kawachi K. | Bar Biryukov P./Shin M. | 2:1 (69:7, 6:4, 14:12) | details | 27.06.2024 |
| 1/8-finals | Ivanov S./Nasridinov A. | Hazawa S./Kawachi K. | 0:2 (3:6, 3:6) | details | 25.06.2024 |
Hong Kong: M15 Hong Kong 2 - Doubles - Main |
| 1/8-finals | Javia D./Kawachi K. | Delaney Ja./Delaney Je. | 1:2 (7:63, 2:6, 5:10) | details | 18.06.2024 |
Guam: M15 Harmon - Doubles - Main |
| Final | Kawachi K./Matsuda R. | Ito T./Kono Y. | 2:0 (6:1, 6:3) | details | 08.06.2024 |
| Semi-finals | Kawachi K./Matsuda R. | Fukuda S./Isomura K. | 2:1 (6:1, 4:6, 10:7) | details | 07.06.2024 |
| Quarter-finals | Kawachi K./Matsuda R. | Poritzky E./Zusman R. | 2:0 (6:4, 6:4) | details | 06.06.2024 |