Stadium: Court N2 Round: 25 Ground: Hardcourt outdoor
| ITF M15 Norman | 2019/07/12 15:00 | Austin Rapp v Nathan Ponwith | 7-6,1-6,7-5 |
| ITF M25 Decatur | 2021/08/04 18:45 | Yunseong Chung v Nathan Ponwith | 6-2,6-1 |
| ITF M25 Decatur | 2021/08/03 16:20 | Alexander Petrov v Nathan Ponwith | 2-6,4-6 |
| 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 M25 Las Vegas | 2020/03/05 18:00 | Nick Chappell v Austin Rapp | 2-6,7-6,7-6 |
| ITF M25 Las Vegas | 2020/03/04 19:20 | Alexander Cozbinov v Austin Rapp | 7-6,0-6,5-7 |
| Challenger Columbus | 2020/02/25 16:35 | Sekou Bangoura v Austin Rapp | 6-3,6-3 |
| ITF M15 Cancun | 2020/02/21 15:35 | Gage Brymer v Austin Rapp | 6-2,6-3 |
| ITF M15 Cancun | 2020/02/20 16:30 | Austin Rapp v Felipe M Sarrasague | 6-4,6-4 |
| ITF M15 Cancun | 2020/02/18 14:00 | Connor Farren v Austin Rapp | 3-6,6-1,3-6 |
| ITF M25 Nonthaburi | 2020/02/05 04:25 | Austin Rapp v Laurent Lokoli | 2-6,2-6 |
| ITF M25 Nonthaburi | 2020/02/04 04:10 | Nam Hoang Ly v Austin Rapp | 3-6,3-6 |