Stadium: Court 4 Round: 54 Ground: Hardcourt indoor
| ITF - M15 Lubbock | 2021/09/30 17:50 | Mark Whitehouse v Chanchai Sookton-Eng | 6-4,6-1 |
| ITF - M15 Lubbock | 2021/09/29 20:35 | Piotr Pawlak v Chanchai Sookton-Eng | 3-6,6-3,5-7 |
| ITF M25 Fayetteville | 2021/09/21 14:00 | Henry Patten v Chanchai Sookton-Eng | 7-5,6-4 |
| ITF - M25 Champaign | 2021/09/13 17:00 | Chanchai Sookton-Eng v Emile Hudd | 5-7,2-6 |
| ITF - M15 Monastir | 2021/09/07 08:00 | Theo Arribage v Chanchai Sookton-Eng | 4-6,6-4,10-7 |
| ITF - M15 Monastir | 2021/09/06 11:00 | Shinnosuke Hiramatsu v Chanchai Sookton-Eng | 6-3,4-6,2-10 |
| ITF - M15 Monastir | 2021/08/30 14:00 | Danila Moroz v Chanchai Sookton-Eng | 1-6,7-5,10-7 |
| ITF - M15 Monastir | 2021/08/30 08:00 | Dheeraj Kodancha Srinivasan v Chanchai Sookton-Eng | 6-7,6-4,5-10 |
| ITF - M15 Bad Waltersdorf | 2021/08/30 09:00 | Kaj Quirijns v Luca Castagnola | 2-6,4-6 |
| ITF - M25 Trimbach | 2021/03/08 11:05 | Kaj Quirijns v Johann Lars | 3-6,6-7 |