Stadium: Court 7 Round: 26 Ground: Hardcourt outdoor
| ITF Vietnam F4 | 2016/09/13 03:00 | Shintaro Imai v Wattanakul, Pol | 4-6,6-4,6-0 |
| ITF - M15 Kashiwa | 2019/04/02 06:05 | Wattanakul, Pol v Seon Yong Han | 6-2,6-3 |
| ITF - M15 Tsukuba | 2019/03/26 01:00 | Wattanakul, Pol v Mark Whitehouse | 2-6,0-6 |
| Kofu, Qualifications Simples M-ITF-JPN-03A | 2019/03/20 03:25 | Wattanakul, Pol v Takuya Kumasaka | 6-3,1-6,3-6 |
| Bangkok, Thaïlande | 2019/02/12 06:25 | Soeda, Go v Wattanakul, Pol | 6-3,6-3 |
| Bangkok, Thaïlande | 2019/02/11 04:30 | Mousley, Bradley v Wattanakul, Pol | 2-6,6-3,2-6 |
| ITF Thailand F9 | 2018/11/12 03:40 | Wattanakul, Pol v Yeung, Pak Long | 5-7,1-6 |
| ITF Thailand F9 | 2018/11/11 07:30 | Navasirisomboon, Jirat v Wattanakul, Pol | 2-6,4-6 |
| ITF Thailand F9 | 2018/11/10 06:00 | Abzalov, Sharobiddin v Wattanakul, Pol | 7-5,1-6,5-7 |
| ITF - M15 Kashiwa | 2019/04/03 02:20 | Kikuchi, Gengo v Shintaro Imai | 3-6,1-6 |
| ITF - M15 Tsukuba | 2019/03/31 02:00 | Jumpei Yamasaki v Shintaro Imai | 4-6,4-6 |
| ITF - M15 Tsukuba | 2019/03/30 01:00 | Naoki Tajima v Shintaro Imai | 1-6,2-6 |
| ITF - M15 Tsukuba | 2019/03/29 01:00 | Yuki Mochizuki v Shintaro Imai | 3-6,6-1,4-6 |
| ITF - M15 Tsukuba | 2019/03/28 01:00 | Tanuma, Ryota v Shintaro Imai | 5-7,3-6 |
| ITF - M15 Tsukuba | 2019/03/26 03:20 | Shintaro Imai v Blake Ellis | 6-2,7-6 |
| ITF - M15 Nishi-Tokyo | 2019/03/15 01:00 | Sekiguchi, Shuichi v Shintaro Imai | 6-3,6-0 |
| ITF - M15 Nishi-Tokyo | 2019/03/14 01:00 | Shintaro Imai v Jumpei Yamasaki | 3-6,6-3,6-3 |