| ITF M25 Harlingen | 2019/09/23 14:00 | Timo Stodder v Guido Marson | 6-4,6-3 |
| ITF USA F34 | 2018/11/24 16:00 | Alexis Gautier v Guido Marson | 6-3,6-2 |
| ITF USA F28 | 2018/10/15 14:35 | Guido Marson v Jonathan Chang | 4-6,2-6 |
| ITF USA F27 | 2018/10/06 18:00 | Chenhe Li v Guido Marson | 6-4,6-2 |
| ITF Italy F22 Qual | 2018/08/06 10:35 | Luca Narcisi v Guido Marson | 7-5,6-3 |
| ITF Italy F21 Qual | 2018/07/28 12:25 | Gianmarco Ferrari v Guido Marson | 6-4,6-2 |
| ITF Italy F20 Qual | 2018/07/22 13:00 | Emiliano Maggioli v Guido Marson | 6-4,6-2 |
| ITF Italy F20 Qual | 2018/07/21 07:30 | Giuseppe La Vela v Guido Marson | 6-7,5-7 |
| ITF M15 Austin | 2019/11/18 17:00 | Pierce Rollins v Angel Diaz Jalil | 3-6,3-6 |
| ITF M25 Fort Worth | 2019/10/21 15:00 | Pierce Rollins v Valentin Vacherot | 2-6,1-6 |
| ITF M25 Fort Worth | 2019/10/20 15:00 | Joshua Sheehy v Pierce Rollins | 2-6,7-6,6-10 |
| ITF M25 Harlingen | 2019/09/25 18:00 | Nathan Ponwith v Pierce Rollins | 6-4,6-2 |
| ITF M25 Harlingen | 2019/09/24 20:30 | Jose Daniel Bendeck v Pierce Rollins | 6-7,3-6 |
| ITF M25 Harlingen | 2019/09/23 14:00 | Miguel Angel Cabrera v Pierce Rollins | 3-6,4-6 |
| ITF M25 Champaign | 2019/07/24 18:45 | Pierce Rollins v Jenson Brooksby | 1-6,1-6 |
| ITF M25 Champaign | 2019/07/23 16:30 | Pierce Rollins v Abraham Asaba | 7-5,7-6 |