Stadium: Court 8 Round: 62 Ground: Clay
| ITF M15 Cairo | 2021/09/06 10:00 | Krittin Koaykul v Mateo Del Pino | 4-6,1-6 |
| ITF M15 Doha | 2020/03/11 14:15 | Krittin Koaykul v Dan Alexandru Tomescu | 5-7,6-4,3-6 |
| ITF M25 Nonthaburi | 2020/02/02 06:45 | Kasidit Samrej v Krittin Koaykul | 6-2,6-3 |
| ITF M25 Nonthaburi | 2020/01/28 06:15 | Krittin Koaykul v Yusuke Takahashi | 1-6,3-6 |
| ITF M15 Doha | 2019/12/18 11:30 | Krittin Koaykul v Daniel Paty | 4-6,4-6 |
| ITF M15 Doha | 2019/12/11 11:30 | Maciej Smola v Krittin Koaykul | 7-6,6-2 |
| ITF M15 Doha | 2019/12/10 13:00 | Krittin Koaykul v Denis Milchenko | 4-6,6-3,10-3 |
| ITF M15 Doha | 2019/12/09 11:20 | Krittin Koaykul v Artem Bahmet | 6-0,6-0 |
| ITF M15 Cairo | 2021/09/06 07:30 | Valerio Aboian v Karan Singh | 6-7,6-3,10-3 |
| ITF M15 Cairo | 2021/09/05 07:30 | Jordan Chiu v Karan Singh | 6-3,1-6,4-10 |
| ITF M15 Pune | 2021/03/23 06:10 | Filip Bergevi v Karan Singh | 6-2,7-5 |