| ITF M15 Edwardsville | 07/19 15:00 | 54 | Nils Ellefsen v Siphosothando Montsi | 2-6,2-6 | |
| ITF M15 East Lansing | 11/17 15:00 | 44 | Nils Ellefsen v Christian Lakoseljac | 6-7,4-6 | |
| ITF USA F33 | 11/17 15:00 | 54 | Kooros Ghasemi v Nils Ellefsen | 7-6,3-6,6-4 | |
| Challenger Lexington Qual | 07/30 15:45 | 46 | Christopher Rungkat v Nils Ellefsen | 6-0,6-4 | |
| Challenger Lexington Qual | 07/29 14:00 | 45 | Nils Ellefsen v Robert Galloway | 6-4,6-4 | |
| ITF USA F27 Qual | 08/07 13:30 | 62 | Hunter Callahan v Nils Ellefsen | 6-3,6-2 | |
| ITF USA F27 Qual | 08/06 13:30 | 62 | Nils Ellefsen v Joseph W. Van Meter | 6-2,6-4 |