Stadium: Court 1 Round: 25 Ground: Clay
| Challenger Salinas 2 | 2021/04/27 17:05 | Denis Yevseyev v Hiroki Moriya | 6-7,2-6 |
| Challenger - Tallahassee | 2021/04/19 00:20 | Strong Kirchheimer v Denis Yevseyev | 6-4,4-6,6-4 |
| Challenger - Oeiras - Kvalifikation | 2021/04/04 13:40 | Evan Furness v Denis Yevseyev | 7-6,5-7,6-3 |
| Challenger - Oeiras | 2021/03/30 11:25 | Goncalo Oliveira v Denis Yevseyev | 6-1,6-2 |
| Challenger - Oeiras | 2021/03/29 14:55 | Pedro Araujo v Denis Yevseyev | 2-6,2-6 |
| Challenger - Oeiras | 2021/03/28 10:00 | Sergio Martos Gornes v Denis Yevseyev | 3-6,3-6 |
| Challenger - St. Petersborg | 2021/03/10 08:30 | Denis Yevseyev v Dmitry Popko | 4-6,6-2,4-6 |
| Challenger - St. Petersborg | 2021/03/09 09:55 | Denis Yevseyev v Vaja Uzakov | 6-0,6-0 |
| Challenger - Zadar | 2021/03/23 09:00 | Marco Bortolotti v Vit Kopriva | 1-6,3-6 |
| Challenger - Zadar | 2021/03/22 09:00 | Vladyslav Orlov v Marco Bortolotti | 6-2,6-7,6-7 |
| Challenger - Zadar | 2021/03/21 13:35 | Victor Vlad Cornea v Marco Bortolotti | 1-6,3-6 |
| ITF M15 - Rovinj | 2021/03/16 10:30 | Corentin Denolly v Marco Bortolotti | 6-4,6-4 |
| ITF M15 - Porec | 2021/03/10 09:00 | Marco Bortolotti v Matteo Arnaldi | 2-6,3-6 |
| Challenger - Gran Canaria - Kvalifikation | 2021/02/28 14:55 | Marco Bortolotti v Pol Toledo Bague | 1-6,5-7 |
| UTR Pro Tennis Series - Barcelona | 2021/02/07 10:30 | Pedro Cachin v Marco Bortolotti | 6-1,5-4 |
| UTR Pro Tennis Series - Barcelona | 2021/02/04 09:00 | Marco Bortolotti v Tristan Meraut | 4-1 |