Stadium: Court S1 Round: 25 Ground: Hardcourt outdoor
| ITF M15 Albuquerque | 2023/09/28 17:10 | Colin Markes v Adam Neff | 6-4,3-6,6-3 |
| ITF M15 Albuquerque | 2023/09/27 21:30 | Rei Sakamoto v Adam Neff | 4-6,2-6 |
| ITF M25 Edwardsville | 2023/07/26 16:30 | Adam Neff v Kareem Allaf | 6-3,3-6,3-6 |
| ITF M25 Dallas | 2023/07/11 18:50 | Nicholas Godsick v Adam Neff | 6-2,6-2 |
| ITF M25 Tulsa | 2023/06/22 15:00 | Alejandro Moreno v Adam Neff | 6-4,6-7,2-6 |
| ITF M25 Tulsa | 2023/06/20 16:00 | Adam Neff v Colin Sinclair | 4-6,7-5,7-5 |
| ITF M25 Wichita | 2023/06/14 22:10 | Adam Neff v Nicaise Muamba | 4-6,7-5,3-6 |
| Challenger Tyler | 2023/06/09 17:40 | Adam Neff v Peter Gojowczyk | 6-3,3-6,2-6 |
| Challenger Charlottesville | 2023/10/30 21:20 | Eliot Spizzirri v Nino Serdarusic | 1-6,6-2,4-6 |
| Challenger Fairfield | 2023/10/10 22:40 | Eliot Spizzirri v Federico Agustin Gomez | 6-3,3-6,3-6 |
| US Open | 2023/08/25 14:00 | Eliot Spizzirri v Aleksandar Kovacevic | 6-4,6-4 |
| US Open | 2023/08/23 23:15 | Eliot Spizzirri v Matteo Gigante | 6-4,6-7,6-1 |
| Challenger Cary | 2023/08/09 01:40 | Eliot Spizzirri v Liam Broady | 2-6,2-6 |
| Challenger Lexington | 2023/08/02 15:50 | Eliot Spizzirri v Steve Johnson | 3-6,5-7 |
| Challenger Lexington | 2023/08/01 00:10 | Eliot Spizzirri v Christian Harrison | 7-6,6-4 |
| ATP Newport | 2023/07/17 19:50 | Eliot Spizzirri v Corentin Moutet | 6-7,0-6 |