Stadium: C Round: 46 Ground: Hardcourt indoor
| Challenger Stockton | 2016/10/04 21:50 | Dennis Nevolo v Frederik Nielsen | 6-4,6-2 |
| Challenger Aptos | 2017/08/08 18:00 | Frederik Nielsen v Tennys Sandgren | 2-6,4-6 |
| Challenger Aptos Qual | 2017/08/06 18:35 | Frederik Nielsen v Bradley Mousley | 6-0,4-6,6-3 |
| Challenger Aptos Qual | 2017/08/05 23:00 | Marc Polmans v Frederik Nielsen | 6-3,1-6,4-6 |
| Challenger Recanati | 2017/07/05 19:00 | Luca Vanni v Frederik Nielsen | 6-2,2-6,6-2 |
| Challenger Recanati | 2017/07/03 13:30 | Frederik Nielsen v Agustin Velotti | 4-6,7-6,6-3 |
| Challenger Recanati Qual | 2017/07/02 12:00 | Lorenzo Frigerio v Frederik Nielsen | 4-6,4-6 |
| Challenger Recanati Qual | 2017/07/01 10:15 | Miki Jankovic v Frederik Nielsen | 7-6,2-6,4-6 |
| ITF Portugal F9 | 2017/06/29 16:15 | Emil Ruusuvuori v Frederik Nielsen | 6-3,4-6,6-3 |
| ITF USA F25 | 2017/07/28 14:00 | Aleksandar Vukic v Dennis Nevolo | 6-3,6-3 |
| ITF USA F25 | 2017/07/27 14:00 | Dennis Nevolo v Manuel Sanchez | 6-2,6-3 |
| ITF USA F25 | 2017/07/26 14:00 | Dennis Nevolo v Sam Riffice | 6-3,6-3 |
| ITF USA F25 | 2017/07/25 16:00 | Dennis Nevolo v Guy Orly Iradukunda | 6-3,6-4 |
| ITF USA F24 | 2017/07/19 15:00 | Jeffrey Schorsch v Dennis Nevolo | 5-7,7-5,6-3 |
| ITF USA F24 | 2017/07/18 15:35 | Guy Orly Iradukunda v Dennis Nevolo | 3-6,1-6 |
| Challenger Winnetka | 2017/07/13 18:05 | Dennis Nevolo v Akira Santillan | 4-6,1-6 |
| Challenger Winnetka | 2017/07/12 21:00 | Dennis Nevolo v Luke Saville | 6-4,7-6 |