Stadium: Court 2 N Round: 25 Ground: Hardcourt outdoor
| ITF M25 Champaign | 2021/07/27 14:50 | Takeuchi, Kento (1987) v Griffith, William | 4-6,3-6 |
| ITF M25 Champaign | 2021/07/26 15:00 | Abraham Asaba v Griffith, William | 2-6,2-6 |
| ITF M15 Edwardsville | 2021/07/23 14:00 | Griffith, William v Cannon Kingsley | 3-6,2-6 |
| ITF M15 Edwardsville | 2021/07/22 16:50 | Boyer, Dusty H v Griffith, William | 6-4,6-7,1-6 |
| ITF M15 Edwardsville | 2021/07/21 21:50 | Griffith, William v Nathan Ponwith | 7-5,6-4 |
| ITF M15 Edwardsville | 2021/07/20 14:30 | Griffith, William v Howard-Tripp, Joshua | 4-6,6-2,10-3 |
| ITF M15 Edwardsville | 2021/07/19 15:00 | Griffith, William v Richards, Alexander | 6-1,6-1 |
| ITF - M15 Héraklion | 2021/06/11 07:00 | Griffith, William v Billy Harris | 2-6,6-7 |
| ITF M15 Edwardsville | 2021/07/25 15:00 | Strong Kirchheimer v Rinky Hijikata | 3-6,1-6 |
| ITF M15 Edwardsville | 2021/07/24 13:50 | Christian Langmo v Strong Kirchheimer | 4-6,4-6 |
| ITF M15 Edwardsville | 2021/07/23 15:35 | Strong Kirchheimer v Eliot Spizzirri | 6-2,6-0 |
| ITF M15 Edwardsville | 2021/07/21 16:00 | Strong Kirchheimer v Stalder, Reese | 7-6,7-6 |
| Weston, FL, Singles M-ITF-USA-05A | 2021/07/03 00:00 | Murkel Dellien v Strong Kirchheimer | 6-7,6-7 |
| Weston, FL, Singles M-ITF-USA-05A | 2021/07/01 21:55 | Blumberg, William v Strong Kirchheimer | 3-6,3-6 |
| ITF M15 Champaign | 2021/06/23 15:00 | Strong Kirchheimer v Farren, Connor | 3-6,4-6 |
| Tulsa, Singles Main, M-ITF-USA-16A | 2021/06/16 17:10 | Strong Kirchheimer v Hidalgo, Diego | 7-6,2-6,3-6 |