Stadium: Court 2 Round: 25 Ground: Hardcourt outdoor
| ITF M25 Decatur | 2021/08/03 15:00 | Preston Brown v Connor Farren | 6-4,6-3 |
| ITF M25 Decatur | 2021/08/02 15:00 | Evan Zhu v Preston Brown | 2-6,2-6 |
| ITF M15 Edwardsville | 2021/07/19 14:00 | Preston Brown v Nicaise Muamba | 6-3,6-3 |
| ITF M15 Champaign | 2021/06/22 15:00 | Victor Lilov v Preston Brown | 7-5,6-0 |
| ITF M15 Champaign | 2021/06/21 15:00 | Preston Brown v Chad Kissell | 6-4,6-4 |
| ITF M25 Wichita | 2021/06/09 21:00 | Preston Brown v Genaro Alberto Olivieri | 3-6,1-6 |
| ITF M25 Wichita | 2021/06/08 17:40 | Murphy Cassone v Preston Brown | 6-3,6-7,6-10 |
| ITF M25 Wichita | 2021/06/07 15:00 | Yi Jui Lo v Preston Brown | 2-6,0-6 |
| ITF M25 Decatur | 2021/08/03 15:00 | Eliot Spizzirri v Jesse Flores | 4-6,6-2,10-3 |
| ITF M25 Decatur | 2021/08/02 15:00 | Naoki Nakagawa v Eliot Spizzirri | 6-7,1-6 |
| ITF M25 Champaign | 2021/07/28 15:00 | Felix Corwin v Eliot Spizzirri | 7-5,7-6 |
| ITF M25 Champaign | 2021/07/27 15:00 | Connor Farren v Eliot Spizzirri | 3-6,2-6 |
| ITF M25 Champaign | 2021/07/26 15:00 | Parth Aggarwal v Eliot Spizzirri | 1-6,1-6 |
| ITF M15 Edwardsville | 2021/07/23 15:35 | Strong Kirchheimer v Eliot Spizzirri | 6-2,6-0 |
| ITF M15 Edwardsville | 2021/07/22 14:20 | Igor Marcondes v Eliot Spizzirri | 6-7,6-7 |
| ITF M15 Edwardsville | 2021/07/21 14:00 | Eliot Spizzirri v Evan Zhu | 7-5,6-1 |