Stadium: Court 6 Round: 25 Ground: Clay
| ITF M15 Kiryat Shmona | 2019/08/26 13:00 | Roi Ginat v Natthasith Kunsuwan | 6-2,6-1 |
| ITF M15 Kiryat Shmona | 2019/08/26 08:30 | Rotem Sobol v Natthasith Kunsuwan | 6-7,3-6 |
| ITF M15 Hua Hin | 2019/08/19 06:25 | Natthasith Kunsuwan v Sung Jun Park | 0-6,4-6 |
| ITF M25 Nonthaburi | 2019/07/30 04:50 | Noppadol Noikor v Natthasith Kunsuwan | 6-4,6-4 |
| ITF M25 Nonthaburi | 2019/07/29 04:00 | Natthasith Kunsuwan v Congsup Congcar | 6-4,7-6 |
| ITF M25 Nonthaburi | 2019/07/22 02:30 | Dusty H. Boyer v Natthasith Kunsuwan | 6-4,6-3 |
| ITF M25 Nonthaburi | 2019/05/29 04:35 | Natthasith Kunsuwan v Kasidit Samrej | 6-4,3-6,5-7 |
| ITF M25 Nonthaburi | 2019/05/28 04:40 | Natthasith Kunsuwan v Michael Mat'chand | 6-4,6-3 |
| ITF M25 Kunshan | 2019/07/06 01:30 | Fajing Sun v Haitong Xia | 7-6,6-2 |
| ITF M25 Kunshan | 2019/07/05 04:20 | Haitong Xia v Yuanfeng Li | 6-4,1-6,7-6 |
| ITF M25 Kunshan | 2019/07/04 03:10 | Daisuke Sumizawa v Haitong Xia | 3-6,6-4,3-6 |
| ITF M25 Kunshan | 2019/07/03 03:45 | Jurence Zosimo Mendoza v Haitong Xia | 3-6,6-4,1-6 |
| ITF M25 Kunshan | 2019/07/02 01:30 | Haitong Xia v Lukas Krainer | 7-6,6-3 |
| ITF M25 Kunshan | 2019/07/01 07:50 | Haitong Xia v Zhenxiong Dong | 6-2,6-1 |
| ITF M25 Shenzhen | 2019/06/10 05:15 | Haitong Xia v Chuhan Wang | 2-6,3-6 |
| ITF M25 Luzhou | 2019/05/30 04:30 | Haitong Xia v Xin Gao | 1-6,2-6 |