Stadium: Court 6 South Round: 44 Ground: Hardcourt indoor
| 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 |
| Iowa City, Singles Qualifying M-ITF-USA-22A | 2019/07/15 15:00 | Cozbinov, Alexander v Peck, Joshua | 4-6,1-6 |
| ITF M15 Norman | 2019/07/10 14:00 | Cozbinov, Alexander v Ezekiel Clark | 6-7,0-6 |
| ITF M25 Norman | 2019/09/29 15:00 | Colin Markes v Hunter Heck | 7-6,6-4 |
| Chiswick, Singles W-ITF-GBR-09A | 2019/08/05 10:55 | Murphy, Brandon v Colin Markes | 6-4,6-2 |
| Brussels, Singles M-ITF-BEL-03A | 2019/07/30 08:00 | Alexis Boureau v Colin Markes | 6-1,6-2 |
| Brussels, Singles M-ITF-BEL-03A | 2019/07/29 09:20 | Tixhon, David v Colin Markes | 3-6,6-3,5-10 |
| Troyes, Singles Qualifying M-ITF-FRA-13A | 2019/07/22 07:00 | Colin Markes v Mayeul Darras | 3-6,7-6,3-10 |
| ITF M25 Kassel | 2019/07/16 08:00 | Mats Rosenkranz v Colin Markes | 4-6,6-2,10-8 |
| Rochester, Singles M-ITF-USA-19A | 2019/06/25 18:20 | Colin Markes v Seelig, Kyle | 2-6,1-6 |
| Rochester, Singles M-ITF-USA-19A | 2019/06/24 17:00 | Colin Markes v Arimilli, Nevin | 5-7,7-6,10-8 |