 Egypt: M15 Cairo 4 - Doubles - Main |
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| Final | Agamenone F./Casanova H. | Onishi K./Yamasaki J. | 2:0 (6:1, 6:4) | details | 30.01.2021 |
| Semi-finals | Ichikawa T./Watanabe S. | Onishi K./Yamasaki J. | 0:2 (62:7, 5:7) | details | 29.01.2021 |
| Quarter-finals | Onishi K./Yamasaki J. | Paz J. P./Velotti A. | 2:0 (6:1, 6:0) | details | 28.01.2021 |
| 1/8-finals | Onishi K./Yamasaki J. | Bertola R./Hampel L. | 2:0 (6:3, 6:4) | details | 26.01.2021 |
| Egypt: M15 Cairo 3 - Doubles - Main |
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| 1/8-finals | Onishi K./Yamasaki J. | Granollers G./Toledo B. P. | 0:2 (5:7, 4:6) | details | 19.01.2021 |
| Egypt: M15 Sharm El Sheikh 4 - Doubles - Main |
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| 1/8-finals | Moritani S./Tanuma R. | Lo Chien H./Onishi K. | 2:1 (7:61, 1:6, 10:7) | details | 25.02.2020 |
| Egypt: M15 Sharm El Sheikh 3 - Doubles - Main |
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| 1/8-finals | Onishi K./Tanuma R. | Vidal Azorin J. F./Vivero G. P. | 0:2 (64:7, 4:6) | details | 18.02.2020 |
 Japan: Kobe - Doubles - Main |
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| Quarter-finals | McLachlan B./Uchiyama Y. | Kibi Y./Onishi K. | 2:0 (6:4, 7:5) | details | 09.11.2017 |
| 1/8-finals | Kibi Y./Onishi K. | Hazawa S./Shimizu Y. | 2:0 (6:4, 6:4) | details | 07.11.2017 |
| Japan: Kobe - Doubles - Main |
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| 1/8-finals | Ito Y./Onishi K. | Ito T./Petzschner P. | 0:2 (4:6, 4:6) | details | 08.11.2016 |
| Japan: Kyoto - Doubles - Main |
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| 1/8-finals | Kondo H./Onishi K. | Gong M./Yi C. | 1:2 (4:6, 7:65, 6:10) | details | 23.02.2016 |
| Japan: Kobe - Doubles - Main |
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| Quarter-finals | Kondo H./Onishi K. | Chen T./Skugor F. | 0:2 (2:6, 4:6) | details | 12.11.2015 |
| 1/8-finals | Ochi M./Tanuma R. | Kondo H./Onishi K. | 0:2 (4:6, 65:7) | details | 11.11.2015 |
Hong Kong: M15 Hong Kong - Singles - Main