Stadium: Court N6 Round: 25 Ground: Clay
| ITF USA F20 Qual | 2018/07/23 15:00 | Colin Markes v Yuval Solomon | 6-1,6-4 |
| ITF USA F20 Qual | 2018/07/22 15:00 | Colin Markes v Pierce Rollins | 6-3,6-7,6-3 |
| ITF Canada F5 | 2018/07/05 22:25 | Lucas Miedler v Colin Markes | 6-3,6-3 |
| ITF Canada F5 | 2018/07/03 18:10 | Tyler Lu v Colin Markes | 1-6,6-3,4-6 |
| ITF Canada F5 Qual | 2018/07/02 17:35 | Julian Bradley v Colin Markes | 5-7,3-6 |
| ITF Canada F4 | 2018/06/29 17:00 | Benjamin Sigouin v Colin Markes | 6-2,7-6 |
| ITF Canada F4 | 2018/06/28 20:40 | Colin Markes v Sem Verbeek | 7-6,7-6 |
| ITF Canada F4 Qual | 2018/06/25 17:00 | Justin Roberts v Colin Markes | 3-6,3-6 |
| ITF USA F20 Qual | 2018/07/23 15:00 | Kyle Seelig v Joshua Ortlip | 0-6,1-6 |
| ITF USA F20 Qual | 2018/07/21 15:00 | Kooros Ghasemi v Joshua Ortlip | 0-6,3-6 |
| ITF USA F19B Qual | 2018/07/14 18:30 | Joshua Ortlip v Toby D. Boyer | 6-1,5-7,4-6 |
| ITF USA F30 | 2017/09/08 18:00 | Maximilien Blancaneaux v Joshua Ortlip | 6-3,2-6,1-6 |