Stadium: Court 1 Round: 25 Ground: Hardcourt outdoor
| ITF M15 Antalya | 2021/01/28 08:00 | Dorian Kos v Matheus Pucinelli De Almeida | 3-6,2-6 |
| ITF M15 Antalya | 2021/01/17 09:00 | Dorian Kos v Yan Sabanin | 2-6,3-6 |
| ITF M15 Antalya | 2021/01/10 07:30 | Gokberk Saritas v Dorian Kos | 6-2,6-4 |
| ITF M15 Antalya | 2021/01/06 07:30 | Stefanos Sakellaridis v Dorian Kos | 2-6,6-2,10-4 |
| ITF M15 Antalya | 2021/01/04 07:00 | Ivan Abramov v Dorian Kos | 3-6,6-2,10-12 |
| ITF M15 Heraklion | 2020/11/23 10:00 | Sean Hodkin v Dorian Kos | 6-3,6-2 |
| ITF M25 Glasgow | 2020/02/16 12:00 | Kristjan Tamm v Dorian Kos | 6-3,6-3 |
| ITF M25 Dublin | 2019/07/30 09:00 | Ben Jones v Dorian Kos | 6-3,6-3 |
| ITF M15 Antalya | 2021/02/24 06:55 | Yunseong Chung v Sean Cuenin | 6-3,3-6,4-6 |
| ITF M15 Antalya | 2021/02/19 09:45 | Yunseong Chung v Gabriel Donev | 3-6,4-6 |
| ITF M15 Antalya | 2021/02/18 11:50 | Yunseong Chung v Georgii Kravchenko | 6-2,5-7,6-3 |
| ITF M15 Antalya | 2021/02/16 08:30 | Yunseong Chung v Alvaro Lopez San Martin | 6-4,6-3 |
| ITF M15 Antalya | 2021/02/12 10:30 | Agustin Velotti v Yunseong Chung | 6-3,6-2 |
| ITF M15 Antalya | 2021/02/11 06:45 | Genaro Alberto Olivieri v Yunseong Chung | 6-4,2-6,3-6 |
| ITF M15 Antalya | 2021/02/10 06:55 | Sarp Agabigun v Yunseong Chung | 4-6,6-7 |
| Davis Cup | 2020/03/07 11:20 | Stefano Travaglia v Yunseong Chung | 6-0,6-1 |