Stadium: Hard Court Central Round: 62 Ground: Hardcourt outdoor
| ITF - M15 Héraklion | 2021/05/17 07:00 | Stalder, Reese v Jimmy Yang | 6-2,6-3 |
| ITF M25 Meerbusch | 2021/04/12 07:30 | Jimmy Yang v Walder, Jim | 2-6,3-6 |
| ITF - M15 Héraklion | 2021/05/18 08:00 | Griffith, William v Soghoyan, Artur | 4-6,6-1,7-10 |
| ITF - M15 Héraklion | 2021/05/17 08:00 | Griffith, William v Lorenzo Joaquin Rodriguez | 6-4,1-6,10-6 |
| UTR Pro Tennis Series Atlanta | 2021/04/18 14:30 | Griffith, William v Gurmendi, Alexis | 6-4,6-3 |
| UTR Pro Tennis Series Atlanta | 2021/04/17 12:30 | Griffith, William v Murphy Cassone | 6-7,6-3,5-3 |
| UTR Pro Tennis Series Atlanta | 2021/04/16 12:30 | Jonny Ho v Griffith, William | 2-6,4-5 |
| UTR Pro Tennis Series Atlanta | 2021/04/15 15:30 | Dugo Reyes, Jose Antonio v Griffith, William | 1-6,0-6 |
| UTR Pro Tennis Series Atlanta | 2021/04/14 12:30 | Nicholas Heng v Griffith, William | 6-7,3-6 |
| UTR Pro Tennis Series Atlanta | 2021/04/12 12:30 | Matthew Segura v Griffith, William | 6-4,6-3 |