Round: 25 Ground: Hardcourt outdoor
| ITF USA F16 | 2018/06/24 14:30 | Kalovelonis, Markos v Alex Rybakov | 1-6,6-7 |
| ITF USA F16 | 2018/06/23 14:30 | Ross, Gianni v Kalovelonis, Markos | 6-7,5-7 |
| ITF USA F16 | 2018/06/22 19:00 | Arconada, Jordi v Kalovelonis, Markos | 6-7,2-6 |
| ITF USA F16 | 2018/06/21 18:30 | Kalovelonis, Markos v Cannon Kingsley | 6-3,6-1 |
| ITF USA F16 | 2018/06/20 17:30 | Kalovelonis, Markos v Ismailov, Temur | 7-6,6-1 |
| ITF USA F14 | 2018/06/16 16:00 | Baughman, Deiton v Kalovelonis, Markos | 6-1,6-3 |
| ITF USA F14 | 2018/06/15 21:00 | Torre, Eduardo Agustin v Kalovelonis, Markos | 3-6,3-6 |
| ITF USA F14 | 2018/06/14 15:00 | Kalovelonis, Markos v Brooksby, Jenson | 6-4,6-4 |