Estádio: Court 2 Round: 62 Ground: Clay
| ITF - M15 Cairo | 2021/09/21 09:30 | Benito Sanchez Martinez v Krittin Koaykul | 6-0,7-6 |
| ITF - M15 Cairo | 2021/09/20 09:00 | Magd Abou El Ezz v Krittin Koaykul | 5-7,1-6 |
| ITF - M15 Cairo | 2021/09/19 16:30 | Vignesh Peranamallur v Krittin Koaykul | 2-6,1-6 |
| ITF - M15 Cairo | 2021/09/13 08:00 | Krittin Koaykul v Samir Hamza Reguig | 1-6,0-6 |
| ITF - M15 Cairo | 2021/09/12 11:00 | Krittin Koaykul v Karan Singh | 1-6,6-3,10-6 |
| 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 |