Round: 62 Ground: Hardcourt indoor
| ITF Canada F9 Qual | 2015/09/07 18:55 | Tennys Sandgren v Nick Chappell | 7-5,6-3 |
| ITF Canada F9 Qual | 2015/09/06 15:30 | Nick Chappell v Koleganov, Egor | 6-2,4-6,6-4 |
| ITF USA F25 Qual | 2015/08/09 14:00 | Nick Chappell v Kopinski, Tim | 6-7,6-4,3-6 |
| ITF USA F24 | 2015/08/05 15:00 | Nick Chappell v Jomby, Tom | 2-6,3-6 |
| ITF USA F24 Qual | 2015/08/03 15:00 | Kohen, Alan v Nick Chappell | 2-6,2-6 |
| ITF USA F24 Qual | 2015/08/02 14:00 | Martin de Oliva Carr, Jose Maria v Nick Chappell | 4-6,3-6 |
| ITF USA F23 | 2015/07/30 15:30 | Nick Chappell v Thompson, Clay | 2-6,3-6 |
| ITF USA F23 | 2015/07/29 13:30 | Schalet, Myles v Nick Chappell | 2-6,3-6 |
| ITF Ireland F1 | 2015/07/21 13:45 | Jhun, Alexander v Oljaca, Mark | 6-2,6-4 |
| ITF Ireland F1 Qual | 2015/07/20 11:05 | Ponder, Andrew v Oljaca, Mark | 4-6,2-6 |
| ITF Guam F1 | 2015/05/26 02:55 | Kelsey Stevenson v Oljaca, Mark | 6-4,6-1 |
| ITF Guam F1 | 2015/05/24 01:00 | Pulliam, Jack v Oljaca, Mark | 3-6,2-6 |
| ITF Greece F2 Qual | 2015/03/29 08:30 | Oljaca, Mark v Antoine Bellier | 3-6,7-6,2-6 |
| ITF Greece F1 | 2015/03/21 08:00 | Bega, Alessandro v Oljaca, Mark | 6-3,6-0 |
| ITF USA F1 Qual | 2015/01/03 20:00 | Oljaca, Mark v Krivokuca, Neven | 2-6,1-6 |
| ITF Canada F9 Qual | 2014/08/30 17:00 | Lin, Winston v Oljaca, Mark | 6-4,6-2 |