Stadium: Court 5 Round: 54 Ground: Hardcourt outdoor
| ITF M15 Ann Arbor | 2024/09/30 15:00 | Marcos L C Baratau v Joshua Portnoy | 2-6,3-6 |
| ITF M25 East Lansing | 2024/07/16 14:00 | Gabrielius Guzauskas v Joshua Portnoy | 6-1,6-1 |
| ITF M15 Kingston | 2024/05/28 18:45 | Reece Falck v Joshua Portnoy | 6-3,6-3 |
| ITF M15 Kingston | 2024/05/27 15:00 | Shu Matsuoka v Joshua Portnoy | 6-3,4-6,5-10 |
| ITF M15 East Lansing | 2023/11/13 17:00 | Joshua Portnoy v Esunge Ndumbe | 6-2,6-1 |
| UTR Pro Columbus | 2023/08/19 19:36 | Chad Miller v Joshua Portnoy | 6-4,6-2 |
| UTR Pro Columbus | 2023/08/18 18:30 | Brandon Carpico v Joshua Portnoy | 6-4,7-6 |
| UTR Pro Columbus | 2023/08/17 16:05 | Alex Fuchs v Joshua Portnoy | 5-7,6-7 |
| ITF M15 Fayetteville | 2024/09/17 15:00 | Ryan Haviland v Max Sheldon | 2-6,7-5,7-10 |
| ITF M25 Wichita | 2024/06/10 17:00 | Hugo Hashimoto v Ryan Haviland | 6-3,7-6 |
| ITF M15 Orange Park | 2024/05/02 15:00 | Ryan Haviland v Axel Nefve | 3-6,0-6 |
| ITF M15 Orange Park | 2024/05/01 15:00 | Matthew Segura v Ryan Haviland | 6-7,5-7 |
| ITF M15 Orange Park | 2024/04/30 15:00 | Ryan Haviland v Pierre Mouesca | 6-2,6-2 |
| ITF M15 Orange Park | 2024/04/29 15:00 | Ryan Haviland v Tennyson Whiting | 6-4,6-4 |
| ITF M15 Vero Beach | 2024/04/25 18:00 | Victor Lilov v Ryan Haviland | 7-6,6-4 |
| ITF M15 Vero Beach | 2024/04/24 18:40 | Ryan Haviland v Miguel Angel Cabrera | 6-3,4-6,6-3 |