Stadium: Court 6 Round: 44 Ground: Hardcourt outdoor
| ITF M25 - Nonthaburi | 2019/05/20 06:55 | Alexander Crnokrak v Krittin Koaykul | 6-1,6-4 |
| ITF M15 - Chiang Rai - Kval | 2022/04/10 06:55 | Colin Markes v Krittin Koaykul | 6-4,1-6,11-9 |
| ITF M15 - Chiang Rai | 2022/04/06 06:35 | Krittin Koaykul v Konstantin Kravchuk | 3-6,4-6 |
| ITF M25 - Canberra | 2022/03/27 23:00 | Hien Q H Pham v Krittin Koaykul | 6-4,6-0 |
| ITF M25 - Canberra | 2022/03/26 22:00 | Timothy Gray v Krittin Koaykul | 4-6,4-6 |
| ITF M25 - Canberra | 2022/03/22 01:10 | Chanchai Sookton-Eng v Krittin Koaykul | 6-2,6-4 |
| ITF M25 - Canberra | 2022/03/20 23:00 | Krittin Koaykul v Thomas Nicholas Gadecki | 6-4,6-4 |
| ITF M25 - Canberra | 2022/03/19 23:00 | Taj Hibbert v Krittin Koaykul | 6-4,4-6,11-13 |
| ITF M25 - Bendigo | 2022/03/05 23:00 | Krittin Koaykul v Patrick Fitzgerald | 2-6,6-7 |
| ITF M15 - Chiang Rai | 2022/04/11 06:20 | Pol Wattanakul v Alexander Crnokrak | 7-5,6-2 |
| ITF M15 - Chiang Rai - Kval | 2022/04/10 13:10 | Issei Okamura v Alexander Crnokrak | 3-6,4-6 |
| ITF M25 - Canberra | 2022/03/29 00:35 | Alexander Crnokrak v James McCabe | 2-6,6-7 |
| ITF M25 - Canberra | 2022/03/22 04:55 | Tristan Schoolkate v Alexander Crnokrak | 6-4,6-2 |
| ITF M25 - Bendigo | 2022/03/08 00:45 | Renta Tokuda v Alexander Crnokrak | 6-4,6-2 |
| ITF M25 - Bendigo | 2022/03/03 01:25 | Alexander Crnokrak v Andrew Harris | 3-6,1-6 |
| UTR Pro Tennis Series - Carrara | 2021/11/07 00:00 | Akira Santillan v Alexander Crnokrak | 6-1,3-6,6-2 |
| UTR Pro Tennis Series - Carrara | 2021/11/06 00:30 | Alexander Crnokrak v Jeremy Jin | 6-4,5-4 |