Stadium: Court 4 Round: 62 Ground: Clay
| ITF M15 - Valldoreix | 2021/05/09 12:00 | Diego F Flores v Juan Ignacio Alcalde | 6-1,6-3 |
| ITF M15 - Majadahonda | 2021/05/02 13:15 | Juan Bautista Otegui v Diego F Flores | 6-3,6-4 |
| ITF M15 LPD Gran Canaria | 2021/04/28 11:25 | Alexander Weis v Diego F Flores | 0-6,6-2,6-3 |
| ITF M25 - Reus | 2021/04/11 07:00 | Xavi Matas Ortega v Diego F Flores | 6-7,6-2,10-6 |
| ITF - M15 Monastir | 2021/03/21 18:00 | Olivier Rojas v Diego F Flores | 6-4,6-2 |
| ITF - M15 Monastir | 2021/03/15 12:30 | Igor Marcondes v Diego F Flores | 6-3,6-1 |
| ITF - M15 Monastir | 2021/03/15 08:00 | Julien De Cuyper v Diego F Flores | 2-6,0-6 |
| ITF - M15 Sharm-el-Sheikh | 2021/03/02 11:55 | Edoardo Eremin v Diego F Flores | 6-4,6-7,10-1 |
| ITF M15 - Valldoreix | 2021/05/09 12:00 | Pedro Iamachkine v Oleg Prihodko | 0-6,3-6 |
| ITF M15 - Majadahonda | 2021/05/03 12:00 | Rishab Agarwal v Oleg Prihodko | 6-3,5-7,10-12 |
| ITF M15 - Majadahonda | 2021/05/02 16:15 | Axel Garcian v Oleg Prihodko | 5-7,2-6 |
| ITF M15 Las Palmas | 2021/04/25 11:00 | Oleg Prihodko v Thomas Deschamps | 3-6,1-6 |
| ITF - M15 Antalya | 2021/04/14 12:55 | Oleg Prihodko v Stefan Palosi | 2-6,4-6 |
| ITF - M15 Antalya | 2021/04/08 07:00 | Dragos Nicolae Madaras v Oleg Prihodko | 6-1,6-0 |
| ITF - M15 Antalya | 2021/04/07 06:55 | Michel Vernier v Oleg Prihodko | 5-7,4-6 |
| ITF - M15 Antalya | 2021/04/06 07:00 | Oleg Prihodko v Bautista Vilicich | 6-3,6-4 |