 Indonesia: M15 Jakarta 3 - Doubles - Main |
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| 1/8-finals | Danilov S./Padgham E. | Nakamura R./Takada M. | 2:1 (6:1, 65:7, 10:7) | details | 14.06.2023 |
 Canada: M25 Montreal 2 - Doubles - Main |
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| Quarter-finals | Nakamura R./Ogura K. | McCormick T./Wojcik J. | 1:2 (1:6, 6:4, 8:10) | details | 16.03.2023 |
| 1/8-finals | Colson T./Heyman C. | Nakamura R./Ogura K. | 0:2 (63:7, 1:6) | details | 14.03.2023 |
 Australia: M25 Traralgon 2 - Doubles - Main |
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| 1/8-finals | Fukuda S./Nakamura R. | Cavrak K./Van Rensburg S. | 1:2 (7:64, 4:6, 8:10) | details | 24.11.2022 |
| Australia: M25 Traralgon - Doubles - Main |
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| 1/8-finals | Fukuda S./Nakamura R. | Taylor A./Whitehouse M. | 1:2 (7:5, 3:6, 6:10) | details | 17.11.2022 |
| Indonesia: M25 Jakarta 2 - Doubles - Main |
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| 1/8-finals | Nakamura R./Pavlekovich Smith T. | Nishiwaki K./Okamura I. | 0:2 (1:6, 65:7) | details | 01.11.2022 |
| Indonesia: M25 Jakarta - Doubles - Main |
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| 1/8-finals | Park U./Son J. H. | Nakamura R./Shah D. | 2:0 (6:2, 6:2) | details | 26.10.2022 |
 South Korea: M15 Daegu - Doubles - Main |
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| 1/8-finals | Han Seon Yong/Na J. | Masabayashi T./Nakamura R. | 2:0 (6:1, 7:5) | details | 31.08.2022 |
| South Korea: M15 Changwon - Doubles - Main |
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| 1/8-finals | Kim J./Lee H. | Nakamura R./Suzuki K. | 2:0 (6:0, 6:2) | details | 24.08.2022 |
 Guam: M25 Harmon 2 - Doubles - Main |
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| Semi-finals | Nam Ji S./Song M.-K. | Nakamura R./Okamura I. | 2:0 (6:1, 6:4) | details | 10.06.2022 |
| Quarter-finals | Nakamura R./Okamura I. | Camacho C./Putter V. | 2:1 (6:3, 2:6, 10:6) | details | 09.06.2022 |
| 1/8-finals | Hong S. C./Kim C. | Nakamura R./Okamura I. | 1:2 (4:6, 6:3, 6:10) | details | 07.06.2022 |
| Guam: M25 Harmon - Doubles - Main |
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| 1/8-finals | Niki T./Takeru Y. | Nakamura R./Okamura I. | 2:0 (6:1, 7:65) | details | 01.06.2022 |
 Israel: M15 Akko - Doubles - Main |
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| 1/8-finals | Bar Menahem S./Katz R. | Nakamura R./Stakusic M. | 2:0 (6:1, 7:5) | details | 17.05.2022 |
 Tunisia: M15 Monastir 13 - Doubles - Main |
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| 1/8-finals | Nakamura R./Watanabe S. | Li Z./Bu Y. | 0:2 (66:7, 4:6) | details | 05.04.2022 |
| Tunisia: M15 Monastir 12 - Doubles - Main |
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| 1/8-finals | Frantzen C./Sandkaulen T. | Nakamura R./Sueoka Y. | 2:0 (6:1, 6:4) | details | 29.03.2022 |
| Tunisia: M15 Monastir 11 - Doubles - Main |
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| Final | Dougaz A./Knaff A. | Masabayashi T./Nakamura R. | 2:0 (6:2, 6:4) | details | 26.03.2022 |
| Semi-finals | Delage P./Tabur C. | Masabayashi T./Nakamura R. | 1:2 (4:6, 6:3, 8:10) | details | 25.03.2022 |
| Quarter-finals | Masabayashi T./Nakamura R. | Mikula M./Ouakaa A. | 2:1 (3:6, 6:4, 10:5) | details | 24.03.2022 |
| 1/8-finals | Castagnola L./Pampanin P. | Masabayashi T./Nakamura R. | 1:2 (6:4, 3:6, 3:10) | details | 23.03.2022 |
| Tunisia: M15 Monastir 9 - Doubles - Main |
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| 1/8-finals | Imamura M./Nakamura R. | Coulibaly E./Erel Y. | 1:2 (3:6, 6:2, 8:10) | details | 08.03.2022 |
 Mexico: M15 Cancun 9 - Doubles - Main |
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| 1/8-finals | Nakamura R./Sau Franco A. | Bittoun C./Walkin B. | 0:2 (5:7, 1:6) | details | 15.12.2021 |
| Israel: M25 Afula - Doubles - Main |
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| Quarter-finals | Friedler A./Zuckerman N. | Nakamura R./Nijboer R. | 2:1 (6:2, 4:6, 11:9) | details | 10.11.2021 |
| 1/8-finals | Baron J./Weintraub B. | Nakamura R./Nijboer R. | 0:2 (3:6, 1:6) | details | 08.11.2021 |
| Israel: M25 Meitar - Doubles - Main |
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| Quarter-finals | Vasa E./Vasa I. | Nakamura R./Parker S. | 2:0 (6:1, 6:4) | details | 04.11.2021 |
| 1/8-finals | Nakamura R./Parker S. | Dagan G./Ginat R. | 2:0 (6:3, 6:2) | details | 03.11.2021 |
| Tunisia: M15 Monastir 20 - Doubles - Main |
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| 1/8-finals | Iradukunda G./Strombachs R. | Imamura M./Nakamura R. | 2:0 (6:1, 6:3) | details | 01.06.2021 |
Rwanda: Kigali 2 - Singles - Qualification
Malaysia: M15 Kuching - Singles - Main
Japan: M15 Karuizawa - Singles - Main
Egypt: M15 Cairo 3 - Singles - Main