Stadium: Court 15 Round: 19 Ground: Hardcourt outdoor
| Challenger Cary | 2023/08/06 20:00 | Nicolas Mejia v Harrison, Ryan | 3-6,4-6 |
| Washington, USA | 2023/07/29 14:00 | Harrison, Ryan v Zachary Svajda | 3-6,6-7 |
| Challenger - Tallahassee | 2023/04/17 14:00 | Kaylan Bigun v Harrison, Ryan | 2-6,6-7 |
| Challenger - Sarasota | 2023/04/10 00:45 | Guido Andreozzi v Harrison, Ryan | 6-3,6-3 |
| Challenger Waco | 2023/02/28 21:10 | Harrison, Ryan v Aleksandar Kovacevic | 3-6,6-7 |
| Rome, USA | 2023/02/22 16:35 | Harrison, Ryan v Elmar Ejupovic | 6-3,6-7,2-6 |
| Rome, USA | 2023/02/20 21:40 | Illya Marchenko v Harrison, Ryan | 3-6,6-3,3-6 |
| Challenger - Cleveland | 2023/02/02 17:45 | Stefan Kozlov v Harrison, Ryan | 6-4,6-4 |
| Challenger Cary | 2023/08/06 21:30 | Pervolarakis, Michail v Blake Ellis | 3-6,2-6 |
| Challenger Lexington | 2023/07/31 17:15 | Blake Ellis v Stefan Dostanic | 4-6,4-6 |
| Challenger Lexington | 2023/07/30 20:00 | Blake Ellis v Noah Schachter | 6-4,6-7,6-4 |
| Challenger Salinas | 2023/07/24 15:00 | Blake Ellis v Matija Pecotic | 3-6,6-4,1-6 |
| Challenger Salinas | 2023/07/23 17:25 | Blake Ellis v Alejandro H Franco | 6-3,6-2 |
| Challenger Granby | 2023/07/17 17:00 | Blaise Bicknell v Blake Ellis | 6-1,6-0 |
| Challenger Granby | 2023/07/17 01:00 | Blake Ellis v Ajeet Rai | 5-7,6-4,7-5 |
| Dallas, Singles Main, M-ITF-USA-18A | 2023/07/15 15:50 | Blake Ellis v Mitchell Krueger | 7-5,6-7,2-6 |