Stadium: Court 4 Round: 54 Ground: Hardcourt outdoor
| ITF M15 Ithaca | 2021/10/05 13:00 | Sookton-Eng, Chanchai v Kaj Quirijns | 2-6,6-3,8-10 |
| ITF M15 Lubbock | 2021/09/30 17:50 | Mark Whitehouse v Sookton-Eng, Chanchai | 6-4,6-1 |
| ITF M15 Lubbock | 2021/09/29 20:35 | Pawlak, Piotr v Sookton-Eng, Chanchai | 3-6,6-3,5-7 |
| Fayetteville, AR, Singles Qualifying, M-ITF-USA-31 | 2021/09/21 14:00 | Patten, Henry v Sookton-Eng, Chanchai | 7-5,6-4 |
| ITF M25 Champaign | 2021/09/13 17:00 | Sookton-Eng, Chanchai v Emile Hudd | 5-7,2-6 |
| ITF - M15 Monastir | 2021/09/07 08:00 | Theo Arribage v Sookton-Eng, Chanchai | 4-6,6-4,10-7 |
| ITF - M15 Monastir | 2021/09/06 11:00 | Hiramatsu, Shinnosuke v Sookton-Eng, Chanchai | 6-3,4-6,2-10 |
| ITF - M15 Monastir | 2021/08/30 14:00 | Moroz, Danila v Sookton-Eng, Chanchai | 1-6,7-5,10-7 |
| UTR Pro Tennis Series California | 2021/08/27 22:30 | Gomez, Lucas v Masato Perera | 6-1,6-4 |
| UTR Pro Tennis Series California | 2021/08/25 20:30 | Kyle Kang v Masato Perera | 6-3,6-2 |
| UTR Pro Tennis Series California | 2021/08/25 00:30 | Sebastian Gorzny v Masato Perera | 3-6,4-6 |
| UTR Pro Tennis Series California | 2021/08/24 00:45 | Masato Perera v Austin Di Giulio | 6-1,6-2 |