| 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 |
| UTR Pro Tennis Series California | 2021/07/30 18:00 | Murphy Cassone v Pierce Rollins | 7-5,7-6 |
| UTR Pro Tennis Series California | 2021/07/28 19:30 | Pierce Rollins v Lawee Sherif | 6-3,7-6 |
| UTR Pro Tennis Series California | 2021/07/27 15:00 | Pierce Rollins v Alex Michelsen | 1-6,7-5,6-3 |
| UTR Pro Tennis Series California | 2021/07/26 15:00 | Eduardo Nava v Pierce Rollins | 2-6,4-6 |
| UTR Pro Tennis Series California | 2021/07/25 15:00 | Sema Pankin v Pierce Rollins | 3-6,6-0,6-3 |
| UTR Pro Tennis Series California | 2021/07/24 16:32 | Pierce Rollins v Alessandro-D Ventre | 6-7,6-3,6-2 |
| UTR Pro Tennis Series California | 2021/07/23 15:00 | Pierce Rollins v Julian Steinhausen | 6-3,6-4 |
| UTR Pro Tennis Series California | 2021/07/20 18:00 | Bradley Frye v Pierce Rollins | 7-6,5-7,6-7 |