Stadium: Court 1 Round: 26 Ground: Hardcourt outdoor
| ITF M15 Nakhon Si Thammarat | 2023/08/23 07:40 | Seon Yong Han v Leo Vithoontien | 7-6,0-6,2-6 |
| ITF M15 Pittsburgh | 2023/07/26 14:00 | Kyle Seelig v Leo Vithoontien | 6-4,2-6,6-4 |
| ITF M15 Rochester | 2023/07/18 22:30 | Rafael Tosetto v Leo Vithoontien | 7-6,3-6,6-3 |
| ITF M25 Laval | 2023/07/15 13:55 | James Tracy v Leo Vithoontien | 6-3,6-2 |
| ITF M25 Laval | 2023/07/14 16:00 | Tristan McCormick v Leo Vithoontien | 4-6,5-7 |
| ITF M25 Laval | 2023/07/13 16:00 | Leo Vithoontien v Taha Baadi | 5-7,6-4,6-4 |
| ITF M25 Laval | 2023/07/11 16:40 | Leo Vithoontien v David Saye | 6-1,6-2 |
| ITF M25 Santo Domingo | 2023/06/27 12:55 | Leo Vithoontien v Angel Diaz Jalil | 6-3,4-6,11-13 |
| ITF M15 Nakhon Si Thammarat | 2023/08/23 04:45 | Ishaque Eqbal v Kasidit Samrej | 4-6,5-7 |
| ITF M25 Jakarta | 2023/08/10 03:55 | Yurii Dzhavakian v Kasidit Samrej | 4-6,6-4,6-2 |
| ITF M25 Jakarta | 2023/08/09 02:30 | Credit Chaiyarin v Kasidit Samrej | 1-6,1-6 |
| ITF M15 Nakhon Si Thammarat | 2023/07/15 02:00 | Kasidit Samrej v Jeamoon Lee | 6-7,5-7 |
| ITF M15 Nakhon Si Thammarat | 2023/07/14 02:00 | Kasidit Samrej v Takuya Kumasaka | 6-1,6-3 |
| ITF M15 Nakhon Si Thammarat | 2023/07/13 02:00 | Kasidit Samrej v Manish Sureshkumar | 6-3,6-3 |
| ITF M15 Nakhon Si Thammarat | 2023/07/12 03:35 | Sanhui Shin v Kasidit Samrej | 4-6,4-6 |
| ITF M15 Nakhon Si Thammarat | 2023/07/08 02:00 | Maximus Jones v Kasidit Samrej | 6-7,6-4,7-5 |