Stadium: Court E3 Round: 54 Ground: Clay
| Orlando, Singles Qualifying M-ITF-USA-17A | 2019/06/19 13:00 | Mwendwa Mbithi v Volfson, David | 6-1,6-3 |
| Canada F7, Singles | 2018/09/11 13:30 | Volfson, David v Arconada, Jordi | 6-4,2-6,2-6 |
| ITF Canada F6 | 2018/09/06 17:10 | Nick Chappell v Volfson, David | 6-2,4-6,6-2 |
| ITF Canada F6 | 2018/09/04 16:45 | Volfson, David v Arconada, Jordi | 6-3,4-6,7-5 |
| ITF Romania F9 | 2018/08/15 12:00 | Volfson, David v Manda, Calin | 1-6,4-6 |
| ITF Romania F8 | 2018/08/07 07:00 | Volfson, David v Apostol, Bogdan Ionut | 1-6,2-6 |
| Challenger Granby | 2018/07/21 18:55 | Volfson, David v Lin, Jack Mingjie | 4-6,2-6 |
| Challenger Gatineau Qual | 2018/07/15 00:45 | Boulais, Justin v Volfson, David | 6-3,6-2 |
| Tulsa, Singles Main, M-ITF-USA-16A | 2019/06/17 15:00 | Harper, Cleeve v Andrew Fenty | 4-6,6-4,6-10 |
| ITF M15 Cancun | 2019/06/10 18:00 | Harper, Cleeve v Damov, Kamen | 7-6,3-6,5-10 |
| ITF M15 Cancun | 2019/06/10 13:30 | Butts, Skyler v Harper, Cleeve | 1-6,3-6 |
| ITF M15 Champaign | 2019/06/03 15:00 | Zhang, Andrew v Harper, Cleeve | 6-1,6-7,10-2 |
| ITF Canada F4 Qual | 2018/06/24 17:00 | Ortiz, Adrian v Harper, Cleeve | 5-7,7-5,6-3 |
| ITF Canada F3 Qual | 2018/06/18 17:35 | A.J Catanzariti v Harper, Cleeve | 6-3,6-3 |