Stadium: Court 2 Round: 62 Ground: Clay
| ITF Japan F6 Qual | 2018/04/09 01:00 | Issei Okamura v Sakai, Yuto | 6-2,6-3 |
| ITF Japan F6 Qual | 2018/04/08 01:00 | Azuma, Ryuhei v Sakai, Yuto | 2-6,2-6 |
| ITF Japan F3 | 2018/03/17 02:30 | Kousuke Ogura v Sakai, Yuto | 6-4,6-3 |
| ITF Japan F2 | 2018/03/13 04:00 | Tanaka, Yunosuke v Sakai, Yuto | 6-4,4-6,7-6 |
| ITF Japan F2 | 2018/03/12 00:30 | Sakai, Yuto v Takeshima, Shunrou | 6-4,6-2 |
| ITF Japan F2 | 2018/03/11 04:00 | Kikuchi, Gengo v Sakai, Yuto | 2-6,2-6 |
| ITF Japan F2 | 2018/03/10 04:00 | Sakai, Yuto v Bang Shuo Yin | 6-3,6-2 |
| ITF Turkey F7 | 2018/02/20 11:30 | Sakai, Yuto v Chun Hsin Tseng | 6-4,2-6,1-6 |
| ITF Malaysia F2 | 2017/10/21 04:30 | Mariyappa, Arjun v Tran, Joshua | 0-6,0-6 |
| ITF Malaysia F1 | 2017/10/15 01:00 | Mariyappa, Arjun v Malyshev, Aleksandr | 6-3,0-6,4-6 |
| ITF Thailand F1 | 2017/06/18 04:55 | Larriere, Clement v Mariyappa, Arjun | 6-1,6-1 |
| ITF Thailand F1 | 2017/06/03 06:00 | Kasidit Samrej v Mariyappa, Arjun | 6-0,6-2 |
| ITF Qatar F3 Qual | 2017/04/16 14:05 | Bergomi, Gianluca v Mariyappa, Arjun | 6-1,6-2 |
| ITF Qatar F3 Qual | 2017/04/15 12:00 | Aljufairi, Rayyan v Mariyappa, Arjun | 1-6,1-6 |