Stadium: Court 1 Round: 25
| Challenger Pune | 2018/11/17 06:00 | Nitin Kumar Sinha v Youssef Hossam | 3-6,4-6 |
| Challenger Bangalore | 2018/11/10 10:35 | Nitin Kumar Sinha v Lucas Gerch | 3-6,4-6 |
| ITF Thailand F8 | 2018/11/04 04:30 | Vladislav Dubinsky v Nitin Kumar Sinha | 6-4,6-3 |
| ITF Vietnam F5 | 2018/10/30 03:00 | Robert Strombachs v Nitin Kumar Sinha | 6-1,6-4 |
| ITF Vietnam F5 | 2018/10/28 05:30 | Nitin Kumar Sinha v Kenny Bun | 6-2,6-3 |
| ITF Vietnam F5 | 2018/10/27 06:00 | Nitin Kumar Sinha v Sarith Our | 6-1,6-0 |
| ITF Vietnam F4 | 2018/10/24 02:30 | Nitin Kumar Sinha v Jayesh Pungliya | 6-2,3-6,3-6 |
| ITF Vietnam F4 | 2018/10/22 02:30 | Nitin Kumar Sinha v Jesse Delaney | 7-6,6-3 |
| Challenger Kobe | 2018/11/10 05:30 | Soichiro Moritani v Tung-Lin Wu | 2-6,6-4,3-6 |
| ITF Thailand F6 | 2018/10/09 02:30 | Matic Spec v Soichiro Moritani | 6-1,5-7,6-3 |
| ITF Thailand F5 | 2018/10/03 05:30 | Soichiro Moritani v Kento Takeuchi | 4-6,5-7 |
| ITF Thailand F5 | 2018/10/01 04:00 | Wishaya Trongcharoenchaikul v Soichiro Moritani | 3-6,6-7 |
| ITF Thailand F4 | 2018/09/27 02:30 | Soichiro Moritani v Shintaro Imai | 1-6,6-7 |
| ITF Thailand F4 | 2018/09/26 04:45 | Soichiro Moritani v Dalwinder Singh | 6-3,6-2 |
| ITF Thailand F4 | 2018/09/25 06:55 | Soichiro Moritani v Kelsey Stevenson | 6-4,6-3 |
| ITF Thailand F3 | 2018/09/07 02:00 | Pruchya Isarow v Soichiro Moritani | 6-2,6-2 |