Stadium: Court 2 Round: 25 Ground: Hardcourt indoor
| Challenger Charlottesville | 2018/10/29 22:25 | Jelle Sels v JC Aragone | 6-3,5-7,7-5 |
| Challenger Las Vegas | 2018/10/23 21:45 | JC Aragone v Marcelo Arevalo | 2-6,6-4,6-7 |
| Challenger Fairfield | 2018/10/10 19:00 | JC Aragone v Casper Ruud | 1-6,6-7 |
| Challenger Fairfield | 2018/10/09 19:40 | Marc Polmans v JC Aragone | 4-6,7-6,3-6 |
| Challenger Stockton | 2018/10/02 17:00 | William Blumberg v JC Aragone | 3-6,6-2,6-2 |
| Challenger Tiburon | 2018/09/26 20:00 | JC Aragone v Noah Rubin | 6-7,4-6 |
| Challenger Tiburon | 2018/09/24 18:35 | Jay Clarke v JC Aragone | 2-6,6-7 |
| Challenger Cary | 2018/09/11 20:45 | Alexei Popyrin v JC Aragone | 6-3,6-4 |
| Challenger Charlottesville | 2018/11/03 18:40 | Bradley Klahn v Tommy Paul | 3-6,3-6 |
| Challenger Charlottesville | 2018/11/02 20:50 | Bradley Klahn v Bjorn Fratangelo | 6-3,6-3 |
| Challenger Charlottesville | 2018/10/31 23:35 | Bradley Klahn v James Ward | 6-1,6-2 |
| Challenger Charlottesville | 2018/10/30 16:40 | Bradley Klahn v Denis Yevseyev | 6-3,2-6,6-3 |
| ATP Vienna | 2018/10/20 09:00 | Sergiy Stakhovsky v Bradley Klahn | 6-7,6-4,6-4 |
| ATP Stockholm | 2018/10/18 17:30 | John Isner v Bradley Klahn | 7-6,6-7,7-6 |
| ATP Stockholm | 2018/10/16 17:35 | Bradley Klahn v Marius Copil | 6-2,3-6,6-4 |
| ATP Shanghai | 2018/10/09 12:20 | Bradley Klahn v Borna Coric | 4-6,2-6 |