Stadium: Court South 3 Round: 27 Ground: Hardcourt outdoor
| ITF M25 Austin | 2023/11/09 14:55 | Mark Whitehouse v Colin Markes | 6-1,5-7,6-10 |
| ITF M25 Austin | 2023/11/08 21:20 | Tiago Torres v Colin Markes | 6-2,3-6,0-6 |
| ITF M25 Edmonton | 2023/11/02 17:20 | Colin Markes v Justin Boulais | 1-6,6-7 |
| ITF M25 Edmonton | 2023/11/01 18:30 | Colin Markes v Ben Jones | 6-4,6-3 |
| ITF M25 Saint-Augustin | 2023/10/25 16:45 | Aidan Mayo v Colin Markes | 6-2,6-4 |
| ITF M15 Las Vegas | 2023/10/19 18:00 | Shunsuke Mitsui v Colin Markes | 6-2,6-2 |
| ITF M15 Las Vegas | 2023/10/18 18:20 | Colin Markes v Dusan Rsovac | 6-1,6-0 |
| Challenger Fairfield | 2023/10/09 18:45 | Colin Markes v Alfredo Perez | 3-6,6-2,4-6 |
| ITF M25 Austin | 2023/11/09 14:55 | Eliot Spizzirri v Yassine Dlimi | 6-3,6-3 |
| ITF M25 Austin | 2023/11/07 18:30 | Adam Neff v Eliot Spizzirri | 4-6,6-4,1-6 |
| Challenger Charlottesville | 2023/10/30 21:20 | Eliot Spizzirri v Nino Serdarusic | 1-6,6-2,4-6 |
| Challenger Fairfield | 2023/10/10 22:40 | Eliot Spizzirri v Federico Agustin Gomez | 6-3,3-6,3-6 |
| US Open | 2023/08/25 14:00 | Eliot Spizzirri v Aleksandar Kovacevic | 6-4,6-4 |
| US Open | 2023/08/23 23:15 | Eliot Spizzirri v Matteo Gigante | 6-4,6-7,6-1 |
| Challenger Cary | 2023/08/09 01:40 | Eliot Spizzirri v Liam Broady | 2-6,2-6 |
| Challenger Lexington | 2023/08/02 15:50 | Eliot Spizzirri v Steve Johnson | 3-6,5-7 |