 Japan: M25 Takasaki - Doubles - Main |
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| Quarter-finals | Isomura K./Sueoka Y. | Horiuchi R./Suzuki K. | 2:0 (6:1, 6:2) | dettagli | 19.09.2024 |
| 1/8-finals | Takahata R./Tange S. | Horiuchi R./Suzuki K. | 0:2 (5:7, 4:6) | dettagli | 17.09.2024 |
| Japan: M25 Sapporo 2 - Doubles - Main |
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| 1/8-finals | Horiuchi R./Takamisawa T. | Matsuda R./Shiraishi H. | 1:2 (6:3, 1:6, 9:11) | dettagli | 10.09.2024 |
 Turkey: M15 Antalya 4 - Doubles - Main |
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| 1/8-finals | Caripi V./Gerch L. | Horiuchi R./Takamisawa T. | 2:0 (6:1, 6:4) | dettagli | 28.02.2024 |
| Japan: M15 Yanagawa 2 - Doubles - Main |
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| Quarter-finals | Horiuchi R./Takamisawa T. | Kawachi K./Sueoka Y. | 0:2 (4:6, 3:6) | dettagli | 28.12.2023 |
| 1/8-finals | Horiuchi R./Takamisawa T. | Kabasawa R./Matsuoka S. | 2:1 (3:6, 6:0, 14:12) | dettagli | 26.12.2023 |
 Tunisia: M15 Monastir 48 - Doubles - Main |
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| 1/8-finals | Carassai C./Horiuchi R. | Bellifemine A./Brigida O. | 0:2 (4:6, 3:6) | dettagli | 28.11.2023 |
| Tunisia: M15 Monastir 47 - Doubles - Main |
|---|
| Quarter-finals | Giovannini U. M./Horiuchi R. | Brunclik P./Filip J. | 1:2 (3:6, 6:4, 1:10) | dettagli | 24.11.2023 |
| 1/8-finals | Cretu C./Onofrei M. C. | Giovannini U. M./Horiuchi R. | 0:2 (3:6, 5:7) | dettagli | 23.11.2023 |
| Tunisia: M15 Monastir 43 - Doubles - Main |
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| 1/8-finals | Barroso Campos A./Poljicak M. | Horiuchi R./Jones A. | 2:0 (6:2, 6:2) | dettagli | 24.10.2023 |
 Italy: M25 Bolzano - Doubles - Main |
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| 1/8-finals | Buldorini P./Horiuchi R. | Jahn J./Wallner M. | 0:2 (2:6, 1:6) | dettagli | 01.08.2023 |
| Italy: M15 Gubbio - Doubles - Main |
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| 1/8-finals | Buldorini P./Horiuchi R. | Bertuccioli F./Tomasetto L. | 0:2 (65:7, 2:6) | dettagli | 18.07.2023 |
| Italy: M25 Padova - Doubles - Main |
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| 1/8-finals | Campana F./Ortenzi G. M. | Bogo E./Horiuchi R. | 2:0 (7:5, 7:67) | dettagli | 11.07.2023 |
| Italy: M25 Biella - Doubles - Main |
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| 1/8-finals | Valle F./Vincent Ruggeri S. | Horiuchi R./Rajski M. | 2:0 (6:0, 7:64) | dettagli | 05.07.2023 |
 Poland: M15 Wroclaw - Doubles - Main |
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| Quarter-finals | Gray T./Horiuchi R. | Barnat J./Duda F. | 0:2 (67:7, 3:6) | dettagli | 29.06.2023 |
| 1/8-finals | Drzewiecki K./Kosinski F. | Gray T./Horiuchi R. | 1:2 (5:7, 6:4, 9:11) | dettagli | 27.06.2023 |
| Turkey: M15 Antalya 18 - Doubles - Main |
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| 1/8-finals | Bulut E./Karahan A. | Braynin A./Horiuchi R. | 2:0 (7:67, 6:2) | dettagli | 25.10.2022 |
 Spain: M25 Girona - Doubles - Main |
|---|
| Quarter-finals | Horiuchi R./Bu Y. | Esteve L. E./Roca Batalla O. | 0:2 (61:7, 5:7) | dettagli | 19.10.2022 |
| 1/8-finals | Kovalov M./Marchenko A. | Horiuchi R./Bu Y. | 0:2 (2:6, 4:6) | dettagli | 18.10.2022 |
| Japan: M25 Kashiwa - Doubles - Main |
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| Quarter-finals | Matsui T./Uesugi K. | Horiuchi R./Inoue G. | 2:0 (7:611, 6:3) | dettagli | 29.09.2022 |
| 1/8-finals | Horiuchi R./Inoue G. | Kubo T./Nicosia M. G. | 2:0 (6:1, 6:2) | dettagli | 27.09.2022 |
| Japan: M25 Sapporo 2 - Doubles - Main |
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| 1/8-finals | Kawachi K./Kawakami R. | Horiuchi R./Nakagawa S. | 2:0 (6:3, 6:2) | dettagli | 07.09.2022 |
| Tunisia: M15 Monastir 30 - Doubles - Main |
|---|
| 1/8-finals | De Rueda De Genover I./Lopez N. | Horiuchi R./Onuma Y. | 2:0 (7:66, 6:1) | dettagli | 02.08.2022 |