Estadio: Court 2 N Round: 54 Ground: Hardcourt outdoor
| 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 |
| ITF M25 Tulsa | 2021/06/16 14:00 | Nathan Ponwith v Sam Riffice | 5-7,4-6 |
| ITF M25 Tulsa | 2021/06/15 16:30 | Nathan Ponwith v Axel Nefve | 6-4,6-4 |
| ITF M25 Tulsa | 2021/06/14 18:00 | Nathan Ponwith v Joshua Sheehy | 6-3,6-4 |
| ITF M15 Fayetteville | 2020/11/03 19:00 | Nathan Ponwith v Brandon Holt | 2-6,4-6 |
| ITF M15 Edwardsville | 2021/07/21 14:00 | Ozan Baris v Victor Lilov | 6-4,4-6,5-7 |
| ITF M15 Monastir | 2021/06/22 10:00 | Imanol L Morillo v Ozan Baris | 6-4,6-4 |
| ITF M15 Monastir | 2021/06/17 08:20 | Ozan Baris v Tiago Cacao | 2-6,3-6 |
| Challenger de Tallahassee | 2021/04/18 22:55 | Alexander Ritschard v Ozan Baris | 6-2,6-2 |