| UTR Pro Tennis Series Florida | 2022/01/03 14:00 | Noah Schachter v Gabrielius Guzauskas | 4-6,5-7 |
| UTR Pro Tennis Series Florida | 2021/12/19 14:00 | Gabrielius Guzauskas v Matthew Thomson | 6-7,1-6 |
| UTR Pro Tennis Series Florida | 2021/12/18 22:40 | Presley Thieneman v Gabrielius Guzauskas | 6-1,5-7,4-6 |
| UTR Pro Tennis Series Florida | 2021/12/16 19:00 | Steven Forman v Gabrielius Guzauskas | 6-3,6-1 |
| UTR Pro Tennis Series Florida | 2021/01/14 20:13 | Charles Sullivan v Gabrielius Guzauskas | 7-5,3-0 |
| UTR Pro Tennis Series Florida | 2021/01/13 14:00 | Giulio Perego v Gabrielius Guzauskas | 4-6,6-4,5-4 |
| UTR Pro Tennis Series Florida | 2021/01/12 20:00 | Benjamin Lock v Gabrielius Guzauskas | 6-4,6-4 |
| UTR Pro Tennis Series Florida | 2021/01/11 17:00 | David Lins v Gabrielius Guzauskas | 3-6,1-5 |
| ITF M15 Cancun | 2021/10/06 18:10 | Stefano Liokossis v Christian Langmo | 1-6,1-6 |
| ITF M15 Cancun | 2021/09/29 15:35 | Stefano Liokossis v Jesse Flores | 4-6,2-6 |
| ITF M15 Cancun | 2021/09/27 14:30 | Stefano Liokossis v Julian Cundom | 6-1,6-0 |
| ITF M15 Cancun | 2021/09/26 15:00 | Patricio Embry v Stefano Liokossis | 6-1,0-6,6-10 |
| ITF M15 Cancun | 2021/09/20 14:00 | Miles Jones v Stefano Liokossis | 6-2,6-2 |