Round: 44 Ground: Hardcourt outdoor
| ITF - M25 - Waco | 2019/10/13 15:00 | Nathan Chavez v Quinn Vandecasteele | 4-6,3-6 |
| ITF - M15 - Pittsburgh | 2019/07/04 16:35 | Maksim Tikhomirov v Quinn Vandecasteele | 6-2,6-2 |
| ITF - M15 - Pittsburgh | 2019/07/03 17:35 | Quinn Vandecasteele v Robert Cash | 6-7,7-5,6-1 |
| ITF - M15 - Pittsburgh | 2019/07/02 14:00 | Jordan Benjamin v Quinn Vandecasteele | 2-6,3-6 |
| ITF - M15 - Pittsburgh | 2019/07/01 14:00 | Quinn Vandecasteele v Lance Cohen | 7-5,6-7,10-5 |
| ITF - M25 - Tulsa | 2019/06/17 15:00 | Quinn Vandecasteele v Emmett Ward | 4-6,5-7 |
| ITF - M25 - Wichita | 2019/06/11 16:50 | Kareem Allaf v Quinn Vandecasteele | 6-1,6-2 |
| ITF - M25 - Wichita | 2019/06/10 15:00 | Quinn Vandecasteele v Jonathan Sorbo | 6-3,5-7,16-14 |
| ITF - M25 - Waco | 2019/10/13 15:00 | Constantin Frantzen v Alexander Lebedev | 6-7,2-6 |
| ITF - M25 - Claremont | 2019/10/10 20:30 | Tanner K Smith v Alexander Lebedev | 3-6,7-6,6-2 |
| ITF - M25 - Claremont | 2019/10/08 18:25 | Alexander Lebedev v Ben Patael | 7-6,6-7,7-6 |
| ITF - M25 - Norman | 2019/10/02 18:00 | Felix Corwin v Alexander Lebedev | 7-6,6-1 |
| ITF - M25 - Norman | 2019/10/01 15:00 | Alexander Lebedev v Hendrik Jebens | 6-4,6-2 |
| ITF - M25 - Norman | 2019/09/30 15:00 | Alexander Lebedev v Nathan Han | 6-3,6-4 |
| ITF - M25 - Norman | 2019/09/29 15:00 | Alexander Lebedev v Preston Touliatos | 6-4,6-2 |
| ITF - M25 - Harlingen | 2019/09/25 14:00 | Tyler Zink v Alexander Lebedev | 6-1,6-2 |