 Indonesia: M15 Bali 2 - Doubles - Main |
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| Semi-finals | Matsuda K./Okamura I. | Masabayashi T./Yamanaka T. | 1:2 (6:4, 1:6, 6:10) | details | 20.09.2024 |
| Quarter-finals | Matsuda K./Okamura I. | Van Donselaar F./Waterbolk I. | 2:0 (6:2, 6:0) | details | 19.09.2024 |
| 1/8-finals | Bobrov B./Shtengelov A. | Matsuda K./Okamura I. | 1:2 (6:4, 3:6, 3:10) | details | 18.09.2024 |
 Singapore: M15 Singapore - Doubles - Main |
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| 1/8-finals | Oh Chan-Yeong/Samrej K. | Nakamura R./Okamura I. | 2:0 (7:62, 6:4) | details | 10.09.2024 |
 Hong Kong: M15 Hong Kong 3 - Doubles - Main |
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| Quarter-finals | Mo Y. C./Yin B. S. | Nakamura R./Okamura I. | 2:0 (6:4, 6:4) | details | 05.09.2024 |
| 1/8-finals | Nakamura R./Okamura I. | Sinclair C./Voisin A. | 2:0 (6:3, 6:1) | details | 04.09.2024 |
| Hong Kong: M25 Hong Kong - Doubles - Main |
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| Quarter-finals | Nakamura R./Okamura I. | Jin Y./Li Z. | 0:2 (3:6, 63:7) | details | 29.08.2024 |
| 1/8-finals | Nakamura R./Okamura I. | Kawahashi Y./Sumizawa D. | 2:0 (6:1, 7:63) | details | 28.08.2024 |
 Taiwan: M25 Taipei 2 - Doubles - Main |
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| 1/8-finals | Leong M. W. K./Sakellaridis S. | Okamura I./Sach T. | 2:0 (6:3, 7:5) | details | 06.08.2024 |
 Japan: M15 Tokyo 2 - Doubles - Main |
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| 1/8-finals | Lee J. M./Song M.-K. | Nakamura R./Okamura I. | 2:1 (5:7, 6:3, 10:5) | details | 09.07.2024 |
 Thailand: M15 Nakhon Si Thammarat 4 - Doubles - Main |
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| 1/8-finals | Lavizzari M./Park S. | Kawahashi Y./Okamura I. | 2:0 (7:62, 6:4) | details | 02.07.2024 |
 China: M25 Luzhou - Doubles - Main |
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| Quarter-finals | Okamura I./Sueoka Y. | Tang S./Zheng Z. | 1:2 (4:6, 6:4, 9:11) | details | 20.06.2024 |
| 1/8-finals | Okamura I./Sueoka Y. | Wang Q./Zhang L. | WO. | details | 19.06.2024 |
 Guam: M15 Harmon - Doubles - Main |
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| 1/8-finals | Fukuda S./Isomura K. | Okamura I./Suzuki K. | 2:0 (7:66, 6:2) | details | 04.06.2024 |
| Japan: M15 Karuizawa - Doubles - Main |
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| 1/8-finals | Kawachi K./Uchida K. | Inoue G./Okamura I. | 2:0 (6:4, 6:2) | details | 29.05.2024 |
 Ethiopia: M25 Addis Ababa - Doubles - Main |
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| 1/8-finals | Kawachi K./Okamura I. | Lock B./Lock C. | 0:2 (3:6, 4:6) | details | 21.05.2024 |
| Ethiopia: M15 Addis Ababa - Doubles - Main |
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| 1/8-finals | Ganta S. K. R./Javia D. | Kawachi K./Okamura I. | 2:0 (7:67, 6:3) | details | 14.05.2024 |
| Japan: M15 Kashiwa - Doubles - Main |
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| 1/8-finals | Kono S./Okamura I. | Saitoh K./Sumizawa D. | 0:2 (1:6, 1:6) | details | 02.04.2024 |
 Australia: M25 Traralgon 2 - Doubles - Main |
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| Quarter-finals | Han Seon Yong/Okamura I. | Delaney Je./Rai A. | 0:2 (3:6, 1:6) | details | 29.02.2024 |
| 1/8-finals | Mehrotra A./Tu L. | Han Seon Yong/Okamura I. | 0:2 (4:6, 4:6) | details | 28.02.2024 |
| Australia: M25 Traralgon - Doubles - Main |
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| Quarter-finals | Bayldon B./Pearson K. | Okamura I./Sach T. | 2:0 (6:3, 7:5) | details | 22.02.2024 |
| 1/8-finals | Okamura I./Sach T. | Cook E./Court J. | 2:1 (7:63, 4:6, 10:4) | details | 20.02.2024 |
 Qatar: M15 Doha - Doubles - Main |
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| 1/8-finals | Kopp S./Okamura I. | Palosi S./Tomescu D. A. | 0:2 (1:6, 4:6) | details | 09.01.2024 |
 Kuwait: M15 Al Zahra 2 - Doubles - Main |
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| 1/8-finals | Bataljin L./Okamura I. | De Carvalho V./Oliveira G. | 0:2 (64:7, 2:6) | details | 31.10.2023 |
| Australia: M25 Darwin 2 - Doubles - Main |
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| 1/8-finals | Okamura I./Takamisawa T. | Mott B./Patton T. | 0:2 (3:6, 4:6) | details | 20.09.2023 |
| Australia: M25 Darwin - Doubles - Main |
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| 1/8-finals | Crowther C./Sach T. | Bouzige M./Okamura I. | 2:0 (6:3, 7:64) | details | 12.09.2023 |
| Japan: M25 Sapporo - Doubles - Main |
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| 1/8-finals | Sekiguchi S./Sumizawa D. | Inui Y./Okamura I. | 2:0 (7:5, 6:4) | details | 06.09.2023 |
| Taiwan: M25 Tainan 2 - Doubles - Main |
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| 1/8-finals | Masabayashi T./Matsuda K. | Kumasaka T./Okamura I. | 2:0 (6:2, 6:3) | details | 22.08.2023 |