Stadium: Court 4 Round: 26 Ground: Hardcourt indoor
| ITF M15 St Petersburg | 2021/02/04 11:25 | Alexander Cozbinov v Evgeny Tyurnev | 7-5,2-6,7-6 |
| ITF M15 St Petersburg | 2021/04/06 13:10 | Evgeny Tyurnev v Vladimir Ivanov | 6-1,6-4 |
| ITF M25 Biel | 2021/03/31 10:00 | Evgeny Tyurnev v Jerome Kym | 6-4,6-7,4-6 |
| Challenger Lugano | 2021/03/21 14:10 | Evgeny Tyurnev v Antoine Bellier | 6-7,4-6 |
| Challenger St. Petersburg | 2021/03/14 12:00 | Evgeny Tyurnev v Kacper Zuk | 6-4,6-2 |
| Challenger St. Petersburg | 2021/03/13 09:30 | Evgeny Tyurnev v Marius Copil | 7-6,6-2 |
| Challenger St. Petersburg | 2021/03/12 09:35 | Mirza Basic v Evgeny Tyurnev | 4-6,2-6 |
| Challenger St. Petersburg | 2021/03/11 09:50 | Evgeny Tyurnev v Altug Celikbilek | 6-3,2-6,6-3 |
| Challenger St. Petersburg | 2021/03/09 11:25 | Vit Kopriva v Evgeny Tyurnev | 4-6,2-6 |
| ITF M15 St Petersburg | 2021/04/07 08:30 | Alexander Cozbinov v Boris Pokotilov | 6-0,6-0 |
| ITF M15 Antalya | 2021/03/30 10:00 | Sanjar Fayziev v Alexander Cozbinov | 6-4,6-3 |
| ITF M15 Antalya | 2021/03/21 07:00 | Alexander Cozbinov v Taiyo Yamanaka | 3-6,3-6 |
| ITF M15 Antalya | 2021/03/18 07:00 | Matheus Pucinelli De Almeida v Alexander Cozbinov | 6-2,6-4 |
| ITF M15 Antalya | 2021/03/17 10:00 | Alexander Cozbinov v Jeroen Vanneste | 6-0,6-3 |
| ITF M15 Kazan | 2021/03/10 15:10 | Yanki Erel v Alexander Cozbinov | 6-3,6-4 |
| ITF M15 St Petersburg | 2021/02/12 11:35 | Jan Choinski v Alexander Cozbinov | 6-2,6-7,6-4 |
| ITF M15 St Petersburg | 2021/02/11 11:15 | Andrey Chepelev v Alexander Cozbinov | 0-6,2-6 |