Stadium: Stadium Court Round: 14 Ground: Clay
| Challenger Sarasota | 2023/04/12 18:00 | Daniel Altmaier v Martin Damm | 6-7,6-3,7-5 |
| Challenger Sarasota | 2023/04/10 16:00 | Jonathan Eysseric v Martin Damm | 3-6,0-6 |
| ATP Miami | 2023/03/20 16:50 | Daniel Altmaier v Martin Damm | 7-5,7-6 |
| Challenger Puerto Vallarta | 2023/03/07 00:05 | Guido Andreozzi v Martin Damm | 7-6,6-3 |
| Challenger Puerto Vallarta | 2023/03/05 23:00 | Martin Damm v Adam Walton | 7-6,6-3 |
| ITF M25 Faro | 2023/02/25 10:45 | Martin Damm v Lucas Poullain | 6-2,5-7,5-7 |
| ITF M25 Faro | 2023/02/24 11:35 | Martin Damm v Henrique Rocha | 2-6,6-1,6-4 |
| ITF M25 Faro | 2023/02/23 15:25 | Martin Damm v Eliakim Coulibaly | 7-6,7-5 |
| ITF M15 Sunrise | 2023/04/11 21:00 | Aidan Kim v Colin Markes | 6-3,7-6 |
| Challenger San Luis Potosi | 2023/04/02 22:35 | Colin Markes v Ajeet Rai | 6-4,3-6,0-6 |
| ITF M25 Calabasas | 2023/03/23 18:00 | Alex Michelsen v Colin Markes | 6-3,6-2 |
| ITF M25 Bakersfield | 2023/03/16 20:15 | Colin Markes v Naoki Nakagawa | 2-6,2-6 |
| ITF M25 Bakersfield | 2023/03/16 01:30 | Miles Jones v Colin Markes | 6-4,5-7,3-6 |
| ITF M15 Monastir | 2023/02/11 10:30 | Nicolas Tepmahc v Colin Markes | 6-3,6-3 |
| ITF M15 Monastir | 2023/02/07 12:30 | Stefanos Sakellaridis v Colin Markes | 5-7,6-2,6-7 |
| ITF M25 Monastir | 2023/02/02 11:45 | Fajing Sun v Colin Markes | 6-2,6-2 |