Stadium: Court 2 Round: 25 Ground: Hardcourt outdoor
| ITF Thailand F3 | 2018/09/02 02:00 | Worarin Kumthonkittikul v Pol Wattanakul | 1-6,2-6 |
| ITF Thailand F2 | 2018/08/28 07:10 | Takashi Saito v Pol Wattanakul | 6-3,3-6,6-3 |
| ITF Thailand F2 | 2018/08/27 02:45 | Rimpei Kawakami v Pol Wattanakul | 4-6,2-6 |
| ITF Thailand F1 | 2018/08/21 08:40 | Pol Wattanakul v Thanapet Chanta | 4-6,4-6 |
| ITF Thailand F1 | 2018/08/20 03:50 | Pol Wattanakul v Charles Roberts | 6-3,6-1 |
| ITF Thailand F1 | 2018/08/19 04:45 | Pol Wattanakul v Yuttana Charoenphon | 6-4,3-6,6-3 |
| ITF USA F8 Qual | 2018/03/17 22:30 | Or Ram-Harel v Pol Wattanakul | 6-1,6-2 |
| Challenger Bangkok | 2018/01/09 06:30 | Marcel Granollers v Pol Wattanakul | 6-2,6-0 |
| ITF Japan F8 | 2018/06/11 00:30 | Takuya Kumasaka v Yuki Matsuo | 2-6,4-6 |
| ITF Japan F8 | 2018/06/09 01:00 | Takuya Kumasaka v Kento Tagashira | 7-6,6-0 |
| ITF Japan F7 | 2018/06/05 01:00 | Takuya Kumasaka v Gengo Kikuchi | 6-3,3-6,4-6 |
| ITF Japan F6 Qual | 2018/04/09 01:00 | Kaito Uesugi v Takuya Kumasaka | 6-3,6-1 |
| ITF Japan F6 Qual | 2018/04/08 01:00 | Takuya Kumasaka v David Barclay | 5-7,6-3,6-1 |
| ITF Japan F4 | 2018/03/24 00:00 | Takuya Kumasaka v Masaki Sasai | 3-6,6-4,3-6 |
| ITF Japan F3 | 2018/03/17 00:30 | Ryohei Tagata v Takuya Kumasaka | 6-0,6-2 |
| ITF Japan F1 | 2018/03/08 07:20 | Takuya Kumasaka v Wishaya Trongcharoenchaikul | 6-1,0-6,3-6 |