| ITF M15 Yanagawa | 10/31 01:00 | 26 | Chan-Yeong Oh v Ryusuke Horiuchi | 6-2,6-4 | |
| ITF M15 Yanagawa | 10/30 03:20 | 25 | Ryusuke Horiuchi v Daisuke Sumizawa | Retired | |
| ITF M15 Yanagawa | 10/29 00:30 | 54 | Ryusuke Horiuchi v Ke Hau Hung | 6-3,6-4 | |
| ITF M15 Tanagura | 10/22 02:10 | 25 | Woobin Shin v Ryusuke Horiuchi | 6-2,6-4 | |
| UTR Pro Urayasu | 10/20 00:00 | - | Seiya Nakanishi v Ryusuke Horiuchi | 0-6,0-6 | |
| UTR Pro Urayasu | 10/19 00:00 | - | Takeshi Maruta v Ryusuke Horiuchi | 6-7,2-6 | |
| UTR Pro Urayasu | 10/18 06:00 | - | Koki Matsuda v Ryusuke Horiuchi | 6-4,6-2 | |
| UTR Pro Urayasu | 10/17 00:00 | - | Kohtaro Kuriyama v Ryusuke Horiuchi | 7-6,1-6,3-6 | |
| UTR Pro Urayasu | 10/16 00:00 | - | Kai Kawano v Ryusuke Horiuchi | 6-2,6-3 | |
| UTR Pro Urayasu | 10/14 01:30 | - | Vassili Psaltopoulos v Ryusuke Horiuchi | 1-6,3-6 | |
| ITF M25 Takasaki | 09/17 00:50 | 25 | Ryusuke Horiuchi v Seita Watanabe | 5-7,6-7 | |
| ITF M25 Takasaki | 09/16 03:20 | 54 | Naoki Tajima v Ryusuke Horiuchi | 2-6,5-7 | |
| ITF M25 Takasaki | 09/15 01:00 | 54 | Ryusuke Horiuchi v Ko Suzuki | 7-6,6-4 | |
| ITF M25 Sapporo | 09/08 05:00 | 54 | Ko Suzuki v Ryusuke Horiuchi | 6-3,6-4 | |
| ITF M25 Sapporo | 09/01 01:00 | 54 | Jeffrey Fradkin v Ryusuke Horiuchi | 6-4,2-6,10-6 | |
| ITF M15 Tokyo | 07/08 03:30 | 54 | Woobin Shin v Ryusuke Horiuchi | 6-3,6-2 | |
| ITF M15 Tokyo | 07/01 01:00 | 54 | Ryusuke Horiuchi v Yuta Tomida | 3-6,4-6 | |
| ITF M15 Hinode | 03/10 03:00 | 62 | Ryusuke Horiuchi v Mattias Southcombe | 3-6,6-3,5-10 | |
| ITF M15 Antalya | 02/27 06:30 | 62 | Federico Campana v Ryusuke Horiuchi | 6-3,4-6,10-6 | |
| ITF M15 Antalya | 02/25 07:00 | 62 | Runze Yang v Ryusuke Horiuchi | 1-6,0-6 | |
| ITF M25 Antalya | 02/19 11:45 | 62 | Federico Bove v Ryusuke Horiuchi | 7-6,6-2 | |
| ITF M25 Antalya | 02/18 07:00 | 62 | Ryusuke Horiuchi v Gabriel Wien | 6-2,6-1 | |
| ITF M25 Antalya | 02/12 08:00 | 62 | Nazar Oliynykov v Ryusuke Horiuchi | 6-2,6-3 | |
| ITF M25 Antalya | 02/11 07:00 | 62 | Ryusuke Horiuchi v Radovan Michalik | 7-6,6-7,10-7 | |
| ITF M25 Antalya | 02/04 07:00 | 62 | Ryusuke Horiuchi v Ewen Lumsden | 3-6,6-7 | |
| ITF M25 Antalya | 01/29 12:55 | 62 | Anthony Genov v Ryusuke Horiuchi | 6-4,6-4 | |
| ITF M25 Antalya | 01/28 07:00 | 62 | Ryusuke Horiuchi v Borys Zgola | 6-2,6-2 | |
| ITF M15 Antalya | 01/22 07:00 | 62 | Ryusuke Horiuchi v Ivan Sergeyev | 3-6,4-6 | |
| ITF M15 Yanagawa | 12/25 03:00 | 54 | Taketo Takamisawa v Ryusuke Horiuchi | 6-1,6-1 | |
| ITF M15 Yanagawa | 12/18 03:00 | 54 | Yuichiro Inui v Ryusuke Horiuchi | 7-5,6-3 |