Stadium: Round: 25 Ground: Hardcourt outdoor
| ITF M25 Edwardsville | 2019/08/11 16:00 | Nathan Ponwith v Petros Chrysochos | 4-6,6-2,5-7 |
| ITF M25 Edwardsville | 2019/08/10 16:00 | Nathan Ponwith v Lebedev, Alexander | 7-6,3-6,7-5 |
| ITF M25 Edwardsville | 2019/08/09 16:30 | Dunbar, Jacob v Nathan Ponwith | 6-4,4-6,5-7 |
| ITF M25 Edwardsville | 2019/08/08 16:20 | Nathan Ponwith v Christian Langmo | 7-5,5-7,6-4 |
| ITF M25 Edwardsville | 2019/08/07 15:00 | Nathan Ponwith v Brandon Walkin | 6-4,2-6,6-1 |
| Binghamton, USA | 2019/07/23 17:20 | Nathan Ponwith v Aleksandar Vukic | 2-6,1-6 |
| Iowa City, Singles Qualifying M-ITF-USA-22A | 2019/07/18 14:00 | Evan Zhu v Nathan Ponwith | 6-3,6-2 |
| Iowa City, Singles Qualifying M-ITF-USA-22A | 2019/07/16 19:05 | Tristan Boyer v Nathan Ponwith | 6-4,2-6,1-6 |
| Kunshan, Simples M-ITF-CHN-12A | 2019/07/02 09:35 | Garrett Johns v Shinji Hazawa | 6-7,1-6 |
| Yinchuan, Simples M-ITF-CHN-11A | 2019/06/28 05:10 | Garrett Johns v Yuta Shimizu | 6-4,4-6,5-7 |
| Yinchuan, Simples M-ITF-CHN-11A | 2019/06/25 04:30 | Garrett Johns v Lazdins, Arturs | 6-1,6-2 |
| Hengyang, Simples M-ITF-CHN-10A | 2019/06/21 03:15 | Garrett Johns v Fajing Sun | 0-6,1-6 |
| Hengyang, Simples M-ITF-CHN-10A | 2019/06/20 03:30 | Garrett Johns v Krainer, L. | 6-3,4-6,7-5 |
| Hengyang, Simples M-ITF-CHN-10A | 2019/06/19 07:20 | Ji, Ang v Garrett Johns | 6-3,1-6,4-6 |
| Hengyang, Simples M-ITF-CHN-10A | 2019/06/18 04:35 | Garrett Johns v Mingzhou, Zhou | 7-5,6-1 |
| Hengyang, Simples M-ITF-CHN-10A | 2019/06/17 02:30 | Garrett Johns v Duan, Jia Qi | 6-3,7-6 |