Stadium: Court 4 Round: 29 Ground: Hardcourt indoor
| ITF M15 St Petersburg MD | 2021/02/09 10:10 | Dubrivnyy/Zakharov v Binda/Ratniuk | 3-6,6-3,10-8 |
| ITF M15 St Petersburg MD | 2021/02/05 12:40 | Cozbinov/Deviatiarov v Dubrivnyy/Zakharov | 7-6,6-0 |
| ITF M15 St Petersburg MD | 2021/02/04 11:25 | Dubrivnyy/Zakharov v Fufygin/Nashatyrkin | 6-4,4-6,10-3 |
| ITF M15 St Petersburg MD | 2021/02/12 11:30 | Paulson/Rikl v Sorrentino/Spec | 6-1,6-4 |
| ITF M15 St Petersburg MD | 2021/02/09 13:40 | Paulson/Rikl v Cozbinov/Deviatiarov | 6-4,6-4 |
| ITF M15 St Petersburg MD | 2021/02/06 10:00 | Cozbinov/Deviatiarov v Paulson/Rikl | 6-4,4-6,8-10 |
| ITF M15 St Petersburg MD | 2021/02/05 11:35 | Paulson/Rikl v Kravchuk/Ratniuk | 6-2,7-5 |
| ITF M15 St Petersburg MD | 2021/02/04 13:10 | Paulson/Rikl v Agafonov/Kachmazov | 6-4,4-6,12-10 |