Stadium: Court 5 Round: 28 Ground: Hardcourt indoor
| ITF M15 Singapore | 2019/06/14 02:00 | Kelsey Stevenson v Jonathan Gray | 3-6,4-6 |
| ITF M15 Singapore | 2019/06/13 02:00 | Congsup Congcar v Jonathan Gray | 6-4,2-6,3-6 |
| ITF M15 Singapore | 2019/06/12 04:40 | Hao Yuan Ng v Jonathan Gray | 0-6,6-4,2-6 |
| ITF M15 Singapore | 2019/06/08 07:00 | Dayne Kelly v Jonathan Gray | 6-3,6-3 |
| ITF M15 Singapore | 2019/06/07 08:30 | Manish Sureshkumar v Jonathan Gray | 3-6,1-6 |
| ITF M15 Singapore | 2019/06/06 09:00 | Shaheed Alam v Jonathan Gray | 1-6,5-7 |
| ITF M15 Singapore | 2019/05/31 02:00 | Harry Bourchier v Jonathan Gray | 6-4,2-6,7-5 |
| ITF M15 Singapore | 2019/05/29 02:00 | Roy Hobbs v Jonathan Gray | 3-6,4-6 |
| ITF M15 Singapore | 2019/06/14 05:30 | Kazuki Nishiwaki v Benard Bruno Nkomba | 6-3,6-0 |
| ITF M15 Singapore | 2019/06/13 02:00 | Kazuki Nishiwaki v Abhinav Sanjeev Shanmugam | 7-6,6-2 |
| ITF M15 Singapore | 2019/06/11 07:45 | Kazuki Nishiwaki v Shamirul S Mohd Adam Das | 6-0,6-1 |
| ITF M15 Singapore | 2019/06/04 02:00 | Cameron Green v Kazuki Nishiwaki | 7-6,6-1 |
| ITF M15 Singapore | 2019/05/29 03:55 | Maksim Tikhomirov v Kazuki Nishiwaki | 6-3,6-4 |
| ITF M25 Wuhan | 2019/05/06 02:00 | Kazuki Nishiwaki v Jianhui Li | 5-7,6-2,6-10 |
| ITF M15 Wuhan | 2019/05/02 02:00 | Kazuki Nishiwaki v Sora Fukuda | 2-6,1-6 |
| ITF M15 Wuhan | 2019/05/01 03:50 | Xin Gao v Kazuki Nishiwaki | 6-2,3-6,3-6 |