Stadium: Court 6 Round: 25 Ground: Clay
| ITF M15 Kouvola | 2021/05/28 09:05 | Alessandro Bega v Alexander Cozbinov | 6-4,6-0 |
| ITF M15 Kouvola | 2021/05/27 09:55 | Karl Kiur Saar v Alexander Cozbinov | 0-6,1-6 |
| ITF M15 Kouvola | 2021/05/26 07:20 | Dominik Palan v Alexander Cozbinov | 6-7,2-6 |
| ITF M15 Tbilisi | 2021/05/19 08:35 | Zane Khan v Alexander Cozbinov | 3-6,6-4,6-0 |
| ITF M15 Jerusalem | 2021/05/13 07:30 | Yshai Oliel v Alexander Cozbinov | 6-3,4-6,6-3 |
| ITF M15 Jerusalem | 2021/05/12 09:35 | Keenan Mayo v Alexander Cozbinov | 2-6,6-4,2-6 |
| 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 Skopje | 2021/06/04 10:25 | Alexander Weis v Ryan Nijboer | 6-7,6-7 |
| ITF M15 Skopje | 2021/06/03 08:00 | Alexander Weis v Martin Damm | 6-3,6-2 |
| ITF M15 Skopje | 2021/06/01 11:00 | Mats Rosenkranz v Alexander Weis | 4-6,6-2,0-6 |
| 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 |