Stadium: Court 2 Round: 54 Ground: Hardcourt outdoor
| ITF M25 Decatur | 2021/08/02 15:00 | Sidharth Rawat v Alexander Petrov | 6-4,1-6,5-10 |
| ITF M25 Champaign | 2021/07/26 15:00 | Ryan Shane v Alexander Petrov | 6-4,6-2 |
| ITF M15 Champaign | 2021/06/21 15:00 | Alexander Petrov v Jose Pereira | 2-6,0-6 |
| ITF M25 Decatur | 2021/08/02 15:00 | Toby D. Boyer v Nathan Ponwith | 1-6,3-6 |
| ITF M25 Champaign | 2021/07/28 21:45 | Naoki Nakagawa v Nathan Ponwith | 4-6,7-5,6-2 |
| ITF M25 Champaign | 2021/07/27 17:05 | Nathan Ponwith v Jibril Nettles | 7-5,6-2 |
| ITF M25 Champaign | 2021/07/26 15:00 | Nathan Ponwith v Ozan Baris | 7-6,6-2 |
| ITF M15 Edwardsville | 2021/07/21 21:50 | William Griffith v Nathan Ponwith | 7-5,6-4 |
| ITF M15 Champaign | 2021/06/23 15:00 | Jason Kubler v Nathan Ponwith | 7-5,6-1 |
| ITF M15 Champaign | 2021/06/22 15:00 | Nathan Ponwith v Michael Zheng | 6-3,6-1 |
| ITF M15 Champaign | 2021/06/21 15:00 | Nathan Ponwith v Hunter Heck | 6-1,6-3 |