| ITF M15 Yanagawa | 12/27 00:30 | 25 | Mikalai Haliak v Ryotaro Matsumura | 6-3,6-3 | |
| ITF M15 Yanagawa | 12/26 00:30 | 54 | Ryotaro Matsumura v Shu Matsuoka | 6-2,6-1 | |
| ITF M15 Yanagawa | 12/22 02:10 | 26 | Kazuma Kawachi v Ryotaro Matsumura | 6-4,4-6,6-4 | |
| ITF M15 Yanagawa | 12/21 00:30 | 25 | Ryotaro Matsumura v Aoran Wang | Retired | |
| ITF M15 Yanagawa | 12/20 02:30 | 54 | Hiroki Sakagawa v Ryotaro Matsumura | 2-6,1-6 | |
| ITF M25 Dharwad | 10/18 09:25 | 25 | Kazuki Nishiwaki v Ryotaro Matsumura | 6-2,7-5 | |
| ITF M15 Ahmedabad | 10/10 03:30 | 25 | Digvijay Pratap Singh v Ryotaro Matsumura | 6-2,6-4 | |
| ITF M25 Takasaki | 09/23 01:00 | - | Ryotaro Matsumura v Hiroyasu Ehara | Cancelled | |
| ITF M25 Takasaki | 09/21 02:00 | 26 | Ryotaro Matsumura v Sora Fukuda | 1-6,1-6 | |
| ITF M25 Takasaki | 09/20 01:00 | 25 | Ryotaro Matsumura v Toru Horie | 6-0,5-7,7-6 | |
| ITF M25 Takasaki | 09/18 00:50 | 19 | Ryotaro Matsumura v Natsuki Yamamoto | 6-2,6-1 | |
| ITF M25 Takasaki | 09/17 01:00 | 54 | Ryotaro Matsumura v Seiya Nakanishi | 6-2,6-4 | |
| ITF M25 Sapporo | 09/10 03:00 | 54 | Ryotaro Matsumura v Yuta Tomida | 6-3,6-7,9-11 | |
| ITF M25 Sapporo | 09/08 01:00 | 27 | Sora Fukuda v Ryotaro Matsumura | 4-6,6-3,6-4 | |
| ITF M25 Sapporo | 09/07 03:00 | 26 | Ryotaro Matsumura v Tatsuma Ito | 7-6,6-4 | |
| UTR Pro Noda | 08/26 04:45 | - | Naoya Honda v Ryotaro Matsumura | 6-2,6-1 | |
| UTR Pro Noda | 08/25 05:20 | - | Ryotaro Matsumura v Paul Howe | 6-2,6-0 | |
| UTR Pro Noda | 08/23 02:15 | - | Ryotaro Matsumura v Tomonobu Inagi | 6-0,6-2 | |
| UTR Pro Noda | 08/22 04:10 | - | Ryotaro Matsumura v Brody Nejedly-Krall | 6-1,6-4 | |
| UTR Pro Noda | 08/21 03:30 | - | Marsel Znuderl v Ryotaro Matsumura | 0-6,0-6 | |
| ITF M15 Caloundra | 08/01 03:40 | 25 | Kazuki Nishiwaki v Ryotaro Matsumura | 6-3,3-6,6-3 | |
| ITF M15 Caloundra | 07/25 04:15 | 25 | Ryotaro Matsumura v Thomas Braithwaite | 3-6,6-4,5-7 | |
| ITF M15 Karuizawa | 06/01 01:45 | 26 | Ryotaro Matsumura v Hikaru Shiraishi | 4-6,2-6 | |
| ITF M15 Karuizawa | 05/30 03:30 | 25 | Ryotaro Matsumura v Naoki Tajima | 3-6,6-1,6-4 | |
| ITF M15 Addis Abeba | 05/23 12:00 | 25 | Nicolas Villalon Valdes v Ryotaro Matsumura | 6-4,6-2 | |
| ITF M15 Addis Abeba | 05/18 09:10 | 26 | S D Prajwal Dev v Ryotaro Matsumura | 6-3,6-4 | |
| ITF M15 Addis Abeba | 05/17 14:00 | 25 | Ryotaro Matsumura v Leonardo Catani | 6-4,6-4 | |
| UTR Pro Miki | 04/15 05:34 | - | Ryotaro Matsumura v Ryotaro Taguchi | 6-4,3-6,3-6 | |
| UTR Pro Miki | 04/14 02:00 | - | Ryotaro Matsumura v Kent Tagashira | 6-1,6-3 | |
| UTR Pro Miki | 04/13 06:45 | - | Ryotaro Matsumura v Graham Maassen | 6-0,6-2 |