Stadium: Court 4 South Round: 25 Ground: Hardcourt indoor
| ITF M25 Norman | 2019/10/01 15:00 | Cozbinov, Alexander v Eero Vasa | 4-6,6-3,8-10 |
| ITF M25 Norman | 2019/09/30 15:00 | Cozbinov, Alexander v Colin Markes | 7-5,7-5 |
| ITF M25 Norman | 2019/09/29 15:00 | Cozbinov, Alexander v Kody Pearson | 6-3,7-5 |
| ITF M15 Fayetteville | 2019/09/18 14:00 | Cozbinov, Alexander v Bryde, Trent | 0-6,5-7 |
| ITF M15 Champaign | 2019/09/12 17:30 | Cozbinov, Alexander v Geller, Axel | 2-6,1-6 |
| ITF M15 Champaign | 2019/09/11 16:00 | Yamada, Kento v Cozbinov, Alexander | 1-6,2-6 |
| ITF M25 Memphis | 2019/08/13 18:00 | Nicolas Moreno De Alboran v Cozbinov, Alexander | 7-5,6-0 |
| ITF M25 Edwardsville | 2019/08/07 14:30 | Cozbinov, Alexander v Lebedev, Alexander | 2-6,7-5,4-6 |
| ITF M25 Harlingen | 2019/09/26 01:40 | Erler, Alexander v Smith, Logan | 1-6,3-6 |
| ITF M25 Harlingen | 2019/09/25 18:30 | Erler, Alexander v Smith, Logan | 1-6,3-5 |
| Columbus III, USA | 2019/09/18 18:50 | Erler, Alexander v Torpegaard, Mikael | 2-6,7-6,1-6 |
| Columbus III, USA | 2019/09/17 15:40 | Sinclair, Colin v Erler, Alexander | 5-7,6-7 |
| Challenger Banja Luka | 2019/09/10 08:00 | Camilo Ugo Carabelli v Erler, Alexander | 6-4,3-6,6-3 |
| Trieste, Singles M-ITF-ITA-20A | 2019/09/07 14:30 | Juan Pablo Varillas v Erler, Alexander | 6-7,6-1,6-4 |
| Trieste, Singles M-ITF-ITA-20A | 2019/09/06 12:00 | Kocevar-Desman, Tom v Erler, Alexander | 1-6,0-6 |
| Trieste, Singles M-ITF-ITA-20A | 2019/09/05 12:15 | Erler, Alexander v Ehrat, Sandro | 6-2,7-5 |