Stadium: Court 2 Round: 26 Ground: Clay
| ITF M25 Bolzano | 2021/08/03 16:20 | Marco Bortolotti v Luca Castagnola | 6-1,3-6,6-2 |
| ITF M25 Wroclaw | 2021/06/30 11:15 | Marco Bortolotti v Illya Beloborodko | 3-6,3-6 |
| Challenger Biella | 2021/05/30 10:55 | Alexey Vatutin v Marco Bortolotti | 3-6,6-4,6-1 |
| ITF M15 Prijedor | 2021/05/11 09:35 | Denis Yevseyev v Marco Bortolotti | 7-6,6-3 |
| 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 M25 Bolzano | 2021/08/03 18:35 | Arthur Reymond v Oscar Jose Gutierrez | 6-4,3-6,6-2 |
| ITF M25 Uriage | 2021/07/14 12:00 | Otto Virtanen v Arthur Reymond | 2-6,6-3,7-6 |
| ITF M25 Montauban | 2021/06/24 11:00 | Franco Agamenone v Arthur Reymond | 7-5,7-5 |
| ITF M25 Montauban | 2021/06/23 08:30 | Nazim Makhlouf v Arthur Reymond | 3-6,1-6 |
| Challenger Aix en Provence | 2021/06/13 11:20 | Arthur Reymond v Michael Geerts | 2-6,3-6 |
| ITF M15 Gaiba | 2021/06/11 11:10 | Mats Rosenkranz v Arthur Reymond | 7-6,6-3 |
| ITF M15 Gaiba | 2021/06/10 12:20 | Arthur Reymond v Giovanni Fonio | 3-6,6-3,6-0 |
| ITF M15 Gaiba | 2021/06/09 09:00 | Arthur Reymond v Mattia Bellucci | 6-1,7-6 |