Tunisia: M15 Monastir 37 - Doubles - Main |
| Quarter-finals | Saito T./Takeuchi K. | Nishiwaki K./Ogura K. | 1:2 (6:3, 62:7, 0:10) | details | 30.09.2021 |
| 1/8-finals | Saito T./Takeuchi K. | Abderrahman W./Oueslati M. A. | 2:0 (6:4, 6:4) | details | 28.09.2021 |
Tunisia: M15 Monastir 16 - Doubles - Main |
| 1/8-finals | Kawahashi Y./Saito T. | Crepaldi E./Kestelboim M. | 1:2 (6:1, 1:6, 7:10) | details | 05.05.2021 |
Egypt: M15 Sharm El Sheikh 4 - Doubles - Main |
| Semi-finals | Hsu Y. H./Imai S. | Lo Chien H./Saito T. | 2:0 (6:0, 6:3) | details | 26.02.2021 |
| Quarter-finals | Lo Chien H./Saito T. | Phillips M./Pinnington Jones J. | 2:0 (7:62, 6:3) | details | 25.02.2021 |
| 1/8-finals | Uzhylovskyi V./Vilardo F. | Lo Chien H./Saito T. | 1:2 (7:5, 4:6, 9:11) | details | 23.02.2021 |
Egypt: M15 Sharm El Sheikh 3 - Doubles - Main |
| 1/8-finals | Kawakami R./Saito T. | Hsu Y. H./Yamasaki J. | 0:2 (2:6, 61:7) | details | 16.02.2021 |
Hong Kong: M15 Hong Kong - Doubles - Main |
| 1/8-finals | Saito T./Tanuma R. | Ehara H./Shimizu Y. | 0:2 (5:7, 2:6) | details | 07.01.2020 |
China: An-Ning - Doubles - Main |
| 1/8-finals | Sharan D./Westerhof B. | Saito T./Watanuki Y. | 2:1 (6:4, 3:6, 18:16) | details | 27.04.2015 |
Japan: Kyoto - Doubles - Main |
| 1/8-finals | Kondo H./Suzuki T. | Ehara H./Saito T. | 2:0 (6:4, 6:2) | details | 23.02.2015 |
Japan: Kyoto - Doubles - Main |
| 1/8-finals | Matsui T./Udomchoke D. | Nishioka Y./Saito T. | 2:0 (7:66, 7:65) | details | 04.03.2014 |