| UTR Pro Tennis Series Florida | 2021/01/13 16:00 | Harris Walker v Charles Sullivan | 6-4,5-4 |
| UTR Pro Tennis Series Florida | 2021/01/12 21:00 | Zachary Svajda v Charles Sullivan | 1-4 |
| UTR Pro Tennis Series Florida | 2021/01/10 18:00 | Ronan Jachuck v Charles Sullivan | 2-6,7-5,5-4 |
| ITF USA F13 Qual | 2018/06/09 15:30 | Andrew Carter v Charles Sullivan | 4-6,6-2,6-0 |
| ITF USA F11 | 2018/04/15 12:00 | Charles Sullivan v Marcelo Sepulveda | 2-6,3-6 |
| ITF USA F10 Qual | 2018/04/09 15:00 | Charles Sullivan v Christopher G Haworth | 1-6,4-6 |
| ITF USA F10 Qual | 2018/04/08 16:00 | Charles Sullivan v Darryl Hale | 6-2,6-4 |
| ITF USA F9 Qual | 2018/04/02 15:45 | Ryan Peniston v Charles Sullivan | 6-0,6-1 |
| 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 |
| UTR Pro Tennis Series Florida | 2020/12/16 22:40 | Alexander Bernard v Gabrielius Guzauskas | 0-0 |
| UTR Pro Tennis Series Florida | 2020/12/15 15:30 | Ramkumar Ramanathan v Gabrielius Guzauskas | 6-3,5-2 |
| UTR Pro Tennis Series Florida | 2020/12/14 23:30 | Logan Zapp v Gabrielius Guzauskas | 6-2,6-3 |