Stadium: Court 6 Round: 25 Ground: Clay
| ITF M15 Ramat Hasharon | 2021/05/07 08:50 | Edan Leshem v Alexander Cozbinov | 6-2,3-6,6-3 |
| ITF M15 Ramat Hasharon | 2021/05/06 07:00 | Dominik Palan v Alexander Cozbinov | 6-4,6-7,6-7 |
| ITF M15 Ramat Hasharon | 2021/05/04 07:00 | Roi Ginat v Alexander Cozbinov | 1-6,3-6 |
| ITF M15 St Petersburg | 2021/04/14 07:00 | Yanki Erel v Alexander Cozbinov | 7-6,7-6 |
| ITF M15 St Petersburg | 2021/04/10 08:00 | Alexander Cozbinov v Ivan Nedelko | 6-2,4-6,3-6 |
| ITF M15 St Petersburg | 2021/04/09 08:00 | Alexander Cozbinov v Artem Dubrivnyy | 6-4,6-7,6-3 |
| ITF M15 St Petersburg | 2021/04/08 09:00 | Evgeny Tyurnev v Alexander Cozbinov | 6-2,3-6,2-6 |
| ITF M15 St Petersburg | 2021/04/07 08:30 | Alexander Cozbinov v Boris Pokotilov | 6-0,6-0 |
| ITF M15 Valldoreix | 2021/05/09 14:00 | Louis Dussin v Alexander Weis | 6-3,6-1 |
| ITF M15 LPD Gran Canaria | 2021/04/29 11:55 | Alexander Weis v Eduard Esteve Lobato | 3-6,2-6 |
| ITF M15 LPD Gran Canaria | 2021/04/28 11:25 | Alexander Weis v Diego F Flores | 0-6,6-2,6-3 |
| ITF M25 Angers | 2021/04/20 10:35 | Alexander Weis v Vincent Stouff | 7-6,3-6,3-6 |
| ITF M25 Angers | 2021/04/19 10:35 | Alexander Weis v Simon Reveniau | 6-3,6-3 |
| ITF M25 Reus | 2021/04/12 07:30 | Alexander Weis v Sean Cuenin | 2-6,6-4,10-3 |
| ITF M25 Reus | 2021/04/11 10:00 | Alexander Weis v Samuel M Arjona | 7-6,5-7,10-4 |
| ITF M15 Antalya | 2021/03/31 07:00 | Alexander Weis v Daniel Michalski | 4-6,0-6 |