Stadium: Court 16 Round: 26 Ground: Clay
| Challenger Prague MD | 2021/05/04 15:40 | Walkow/Zielinski v Sabanov/Sabanov | 6-3,3-6,5-10 |
| Challenger Split MD | 2021/04/17 13:00 | Barrere/Olivetti v Walkow/Zielinski | 2-6,5-7 |
| Challenger Split MD | 2021/04/16 13:30 | Walkow/Zielinski v Golubev/Nedovyesov | 6-3,7-6 |
| Challenger Split MD | 2021/04/15 12:35 | Ajdukovic/Nincevic v Walkow/Zielinski | 0-6,4-6 |
| Challenger Split MD | 2021/04/14 13:00 | Walkow/Zielinski v Raja/Weissborn | 6-3,6-4 |
| Challenger Split MD | 2021/04/10 14:35 | Golubev/Nedovyesov v Walkow/Zielinski | 7-5,6-7,10-5 |
| Challenger Split MD | 2021/04/09 13:35 | Walkow/Zielinski v Olivetti/Reid | 6-4,6-4 |
| Challenger Split MD | 2021/04/08 11:00 | Walkow/Zielinski v Galloway/Lawson | 7-5,7-6 |
| ITF M15 St Petersburg MD | 2021/04/15 13:00 | Golubev/Tiurnev v Pecak/Satral | 4-6,1-6 |
| ITF M15 St Petersburg MD | 2021/04/08 12:40 | Pogosian/Sheyngezikht v Golubev/Tiurnev | 6-1,7-6 |
| ITF M25 Biel MD | 2021/03/30 15:15 | Riedi/Stricker v Golubev/Tiurnev | 6-4,6-2 |
| Challenger Lugano MD | 2021/03/23 17:15 | Golubev/Tiurnev v Raja/Weissborn | 4-6,6-3,7-10 |
| Challenger St. Petersburg MD | 2021/03/10 14:30 | Golubev/Tiurnev v De Jong/Verbeek | 4-6,6-7 |
| Challenger St. Petersburg MD | 2021/03/03 13:45 | Golubev/Tiurnev v Hassan/Vatutin | 6-7,3-6 |
| ITF M15 St Petersburg MD | 2021/02/11 13:55 | Sorrentino/Spec v Golubev/Tiurnev | 1-6,6-4,10-3 |
| ITF M15 St Petersburg MD | 2021/02/04 15:55 | Golubev/Tiurnev v Cozbinov/Deviatiarov | 6-1,1-6,6-10 |