Stadium: Court 2 North Round: 44 Ground: Hardcourt indoor
| ITF M25 Chiswick | 2019/08/05 10:55 | Brandon Murphy v Colin Markes | 6-4,6-2 |
| ITF M15 Brussels | 2019/07/30 08:00 | Alexis Boureau v Colin Markes | 6-1,6-2 |
| ITF M15 Brussels | 2019/07/29 09:20 | David Tixhon v Colin Markes | 3-6,6-3,5-10 |
| ITF M25 Troyes | 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 |
| ITF M15 Rochester | 2019/06/25 18:20 | Colin Markes v Kyle Seelig | 2-6,1-6 |
| ITF M15 Rochester | 2019/06/24 17:00 | Colin Markes v Nevin Arimilli | 5-7,7-6,10-8 |
| ITF M25 Tulsa | 2019/06/20 19:10 | Colin Markes v Alexander Sarkissian | 6-3,1-6,4-6 |
| ITF M25 Harlingen | 2019/09/24 14:00 | Adrian Andreev v Hunter Heck | 6-4,6-3 |
| ITF M25 Harlingen | 2019/09/23 14:00 | Hunter Heck v Preston Touliatos | 6-3,6-1 |
| ITF M15 Orlando | 2019/06/18 14:00 | Keenan Mayo v Hunter Heck | 7-6,6-3 |
| ITF USA F5 | 2018/01/19 13:00 | Hunter Heck v Carson Haskins | 0-6,0-6 |