| UTR Pro Tennis Series - Teksas | 2021/09/24 17:30 | Grant Lothringer v Matthis Ross | 4-6,1-5 |
| UTR Pro Tennis Series - Teksas | 2021/09/23 17:30 | Stefan Storch v Matthis Ross | 6-4,3-6,5-3 |
| UTR Pro Tennis Series - Teksas | 2021/09/21 17:30 | Harrison Adams v Matthis Ross | 6-2,5-3 |
| UTR Pro Tennis Series - Teksas | 2021/09/20 17:00 | Matthis Ross v Suraj Prabodh | 6-1,6-2 |
| UTR Pro Tennis Series - Floryda | 2021/08/21 13:30 | Jake Van Emburgh v Matthis Ross | 6-2,5-4 |
| UTR Pro Tennis Series - Floryda | 2021/08/20 12:00 | Henry Lieberman v Matthis Ross | 3-6,3-6 |
| UTR Pro Tennis Series - Floryda | 2021/08/19 12:00 | Huzaifa Abdul Rehman v Matthis Ross | 2-6,6-2,1-5 |
| UTR Pro Tennis Series - Floryda | 2021/08/16 14:30 | Matthis Ross v Rafael Lima Wagner | 6-4,6-7,6-3 |
| UTR Pro Tennis Series - Teksas | 2021/09/24 17:30 | Rahul Dhokia v Guido Marson | 3-6,2-6 |
| UTR Pro Tennis Series - Teksas | 2021/09/23 17:30 | Kenner Taylor v Guido Marson | 2-6,6-6 |
| UTR Pro Tennis Series - Teksas | 2021/09/21 13:00 | Brayden Michna v Guido Marson | 2-6,1-6 |
| UTR Pro Tennis Series - Teksas | 2021/09/20 14:30 | Guido Marson v Pierce Rollins | 2-6,1-5 |
| ITF - Harlingen M25 | 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 |