Stadium: Court 1 Round: 25 Ground: Hardcourt outdoor
| ITF - M15 Monastir | 2021/05/09 11:00 | Kos, Dorian v Stefano D'Agostino | 4-6,6-3,7-10 |
| ITF - M15 Monastir | 2021/05/03 13:00 | Vernier, Michel v Kos, Dorian | 1-6,6-2,10-7 |
| ITF - M15 Monastir | 2021/04/25 08:00 | Kos, Dorian v Arthur Bouquier | 1-6,1-6 |
| ITF - M15 Monastir | 2021/04/18 10:00 | Bergevi, Filip v Kos, Dorian | 6-1,6-4 |
| ITF - M15 Monastir | 2021/04/11 11:00 | Eminefendic, Ervin Haris v Kos, Dorian | 2-6,6-2,10-6 |
| ITF - M15 Monastir | 2021/04/05 13:30 | Kos, Dorian v Ruzgas, Marius | 2-6,6-7 |
| ITF - M15 Monastir | 2021/04/04 11:30 | Presuhn, Bastien v Kos, Dorian | 6-2,3-6,9-11 |
| ITF - M15 Monastir | 2021/03/28 11:30 | Rodriguez, Lisandru v Kos, Dorian | 6-1,3-6,10-8 |
| ITF - M15 Monastir | 2021/05/16 08:30 | Dougaz, Aziz v Yunseong Chung | 1-6,5-7 |
| ITF - M15 Monastir | 2021/05/15 08:25 | Omni Kumar v Yunseong Chung | 2-6,5-7 |
| ITF - M15 Monastir | 2021/05/14 08:30 | Santiago Rodriguez Taverna v Yunseong Chung | 2-6,2-6 |
| ITF - M15 Monastir | 2021/05/13 08:30 | Crepaldi, Erik v Yunseong Chung | 4-6,5-7 |
| ITF - M15 Monastir | 2021/05/11 08:30 | Mariano Kestelboim v Yunseong Chung | 7-6,1-6,2-6 |
| ITF - M15 Monastir | 2021/05/04 10:30 | Yunseong Chung v Brandon Holt | 3-6,3-6 |
| ITF - M15 Monastir | 2021/05/01 08:30 | Benjamin Pietri v Yunseong Chung | 6-2,3-6,6-4 |
| ITF - M15 Monastir | 2021/04/30 08:25 | Yunseong Chung v Soares Klier, Gilbert | 6-2,3-6,6-1 |