| ITF M25 Harlingen | 2019/09/23 14:00 | Timo Stodder v Marson, Guido | 6-4,6-3 |
| USA F34, Singles | 2018/11/24 16:00 | Alexis Gautier v Marson, Guido | 6-3,6-2 |
| ITF USA F28 | 2018/10/15 14:35 | Marson, Guido v Chang, Jonathan | 4-6,2-6 |
| ITF USA F27 | 2018/10/06 18:00 | Li, Chenhe v Marson, Guido | 6-4,6-2 |
| ITF Italy F22 Qual | 2018/08/06 10:35 | Narcisi, Luca v Marson, Guido | 7-5,6-3 |
| ITF Italy F21 Qual | 2018/07/28 12:25 | Gianmarco Ferrari v Marson, Guido | 6-4,6-2 |
| ITF Italy F20 Qual | 2018/07/22 13:00 | Maggioli, Emiliano v Marson, Guido | 6-4,6-2 |
| ITF Italy F20 Qual | 2018/07/21 07:30 | Giuseppe La Vela v Marson, Guido | 6-7,5-7 |
| UTR Pro Tennis Series California | 2021/07/30 18:00 | Murphy Cassone v Rollins, Pierce | 7-5,7-6 |
| UTR Pro Tennis Series California | 2021/07/28 19:30 | Rollins, Pierce v Lawee Sherif | 6-3,7-6 |
| UTR Pro Tennis Series California | 2021/07/27 15:00 | Rollins, Pierce v Alex Michelsen | 1-6,7-5,6-3 |
| UTR Pro Tennis Series California | 2021/07/26 15:00 | Nava, Eduardo v Rollins, Pierce | 2-6,4-6 |
| UTR Pro Tennis Series California | 2021/07/25 15:00 | Sema Pankin v Rollins, Pierce | 3-6,6-0,6-3 |
| UTR Pro Tennis Series California | 2021/07/24 16:32 | Rollins, Pierce v Ventre, Alessandro-Damiano | 6-7,6-3,6-2 |
| UTR Pro Tennis Series California | 2021/07/23 15:00 | Rollins, Pierce v Julian Steinhausen | 6-3,6-4 |
| UTR Pro Tennis Series California | 2021/07/20 18:00 | Frye, Bradley v Rollins, Pierce | 7-6,5-7,6-7 |