Stadium: Court 5 Round: 62 Ground: Hardcourt outdoor
| ITF M15 Monastir | 2021/04/12 08:00 | Andrea Guerrieri v Federico Lucini | 6-1,6-3 |
| ITF M15 Monastir | 2021/04/11 09:00 | Andrea Guerrieri v Lukas H Lilleengen | 7-5,7-5 |
| ITF M15 St Petersburg | 2021/02/10 08:35 | Vladimir Ivanov v Andrea Guerrieri | 6-4,6-2 |
| ITF M15 St Petersburg | 2021/02/08 07:00 | Andrea Guerrieri v Alexandr Binda | 6-0,7-6 |
| ITF M15 St Petersburg Qual | 2021/02/07 07:00 | Andrea Guerrieri v Bogdan Seleznev | 6-2,6-1 |
| ITF M15 St Petersburg | 2021/02/03 07:00 | Vladimir Ivanov v Andrea Guerrieri | 6-4,7-5 |
| ITF M15 St Petersburg | 2021/02/01 07:00 | Andrea Guerrieri v Egor Noskin | 6-3,6-4 |
| ITF M15 St Petersburg | 2021/01/31 07:00 | Andrea Guerrieri v Alexander Ovcharov | 6-2,6-1 |
| ITF M15 Monastir | 2021/04/12 08:00 | Fons Van Sambeek v Fabio Coelho | 6-4,0-6,5-10 |
| ITF M15 Monastir | 2021/04/11 09:00 | Romain Faucon v Fabio Coelho | 3-6,5-7 |
| ITF M15 Monastir | 2021/04/05 13:30 | Bruno P Navarro v Fabio Coelho | 4-6,6-4,10-5 |
| ITF M15 Monastir | 2021/04/05 09:00 | Louis Allen v Fabio Coelho | 5-7,6-7 |
| ITF M15 Monastir | 2021/04/04 13:00 | Giovanni Agostinetto v Fabio Coelho | 3-6,1-6 |
| ITF M25 Vale Do Lobo | 2021/03/10 13:20 | Fabio Coelho v Sebastian Fanselow | 1-6,4-6 |
| ITF M25 Vale Do Lobo | 2021/03/09 11:00 | Hugo Pontico v Fabio Coelho | 7-6,6-2 |
| ITF M25 Vale Do Lobo | 2021/03/08 13:00 | Gianmarco Amatiste v Fabio Coelho | 0-6,3-6 |