Stadium: Court 8 Round: 27 Ground: Hardcourt outdoor
| ITF Canada F5 | 2018/07/05 18:20 | Halebian, Alexios v Volfson, David | 4-6,6-7 |
| ITF Canada F5 | 2018/07/03 16:00 | Baadi, Taha v Volfson, David | 5-7,0-6 |
| ITF USA F16 | 2018/06/19 17:00 | Volfson, David v Godamanna, Harshana | 7-6,4-6,2-6 |
| ITF USA F14 | 2018/06/14 16:00 | Volfson, David v Baughman, Deiton | 6-2,3-6,6-7 |
| ITF USA F14 | 2018/06/12 21:00 | Fugate, Marcus v Volfson, David | 6-7,3-6 |
| ITF USA F5 | 2018/01/23 16:40 | Volfson, David v Pla Malfeito, Jaume | 3-6,4-6 |
| ITF USA F5 | 2018/01/22 15:00 | Trombetta, Ty v Volfson, David | 1-6,6-3,3-6 |
| ITF USA F4 | 2018/01/18 16:40 | Volfson, David v Roberto Cid Subervi | 2-6,2-6 |
| ITF Canada F5 | 2018/07/05 17:00 | Griffith, William v Wishaya Trongcharoenchaikul | 3-6,6-1,6-3 |
| ITF Canada F5 | 2018/07/04 00:45 | Griffith, William v Brymer, Gage | 6-2,1-6,6-4 |
| ITF Canada F5 Qual | 2018/07/02 16:00 | Griffith, William v Lunn, Justin | 6-0,6-1 |
| ITF Canada F5 Qual | 2018/06/30 16:00 | Justin Roberts v Griffith, William | 4-6,6-4,1-6 |
| ITF Canada F4 Qual | 2018/06/25 21:30 | Griffith, William v Bradley, Julian | 3-6,6-2,6-7 |
| ITF Canada F4 Qual | 2018/06/24 17:00 | Torres, Richard v Griffith, William | 3-6,1-6 |
| ITF Canada F4 Qual | 2018/06/23 17:00 | Ronald Hohmann v Griffith, William | 4-6,6-3,1-6 |
| USA F34, Singles | 2016/10/26 20:15 | Griffith, William v Michael Zhu | 3-6,4-6 |