Stadium: Court 3 Round: 62 Ground: Hardcourt outdoor
| Challenger Columbus | 2018/09/16 00:05 | Song, Evan v Hiltzik, Aron | 4-6,6-2,7-5 |
| Challenger Chicago | 2018/09/02 21:35 | Hiltzik, Aron v Sarkissian, Alexander | 1-6,2-6 |
| ITF USA F21 | 2018/08/03 15:00 | Hiltzik, Aron v Dunbar, Jacob | 2-6,3-6 |
| ITF USA F21 | 2018/08/02 15:00 | Hiltzik, Aron v Nanda, Govind | 6-4,6-3 |
| ITF USA F20 | 2018/07/24 16:50 | Farquharson, Tom v Hiltzik, Aron | 7-6,6-2 |
| ITF USA F19B | 2018/07/19 19:05 | Hiltzik, Aron v Farquharson, Tom | 1-6,6-7 |
| ITF USA F19B | 2018/07/17 15:00 | Mercier, Tyler v Hiltzik, Aron | 0-6,2-6 |
| Challenger Winnetka Qual | 2018/07/07 17:30 | Hiltzik, Aron v Oliver Crawford | 6-4,1-6,3-6 |
| ITF USA F27 | 2018/10/07 15:00 | Pierce, Aron v Maginley, J. | 2-6,6-4,7-6 |
| ITF USA F27 | 2018/10/06 15:00 | Pierce, Aron v Jiajun He | 6-1,6-2 |
| Zimbabwe F3, Singles Qualifying | 2018/06/11 09:00 | Schmid, Aaron v Pierce, Aron | 4-6,6-4,6-3 |
| ITF Zimbabwe F2 | 2018/06/07 07:30 | Pierce, Aron v Bojanovic, Darko | 4-6,2-6 |
| ITF Zimbabwe F2 | 2018/06/06 08:30 | Pierce, Aron v Bhullard, Rana-Roop Singh | 6-3,7-6 |
| ITF Zimbabwe F2 Qual | 2018/06/04 09:35 | Pierce, Aron v Caripi, Vasilios | 6-1,7-6 |
| ITF Zimbabwe F2 Qual | 2018/06/03 08:00 | Pierce, Aron v Chilakalapudi, Tarun Anirudh | 3-6,6-3,6-4 |
| ITF Zimbabwe F1 | 2018/05/29 07:00 | Blanco Guadalupe, Jorge v Pierce, Aron | 6-1,6-2 |