Stadium: Court 5 Round: 24 Ground: Hardcourt outdoor
| Challenger Brest | 2018/10/23 09:00 | Benjamin Bonzi v Enrique Lopez-Perez | 6-3,6-1 |
| Challenger Ningbo | 2018/10/16 07:15 | Enrique Lopez-Perez v Go Soeda | 6-7,6-3,6-7 |
| Challenger Tashkent | 2018/10/09 10:45 | Mathias Bourgue v Enrique Lopez-Perez | 7-5,6-3 |
| Challenger Almaty 2 | 2018/10/02 04:00 | Enrique Lopez-Perez v Illya Marchenko | 6-3,3-6,4-6 |
| Challenger Orleans | 2018/09/24 17:35 | Enrique Lopez-Perez v Aljaz Bedene | 3-6,4-6 |
| Challenger Seville | 2018/09/04 08:30 | Enrique Lopez-Perez v Pedja Krstin | 5-7,4-6 |
| Challenger Mallorca | 2018/09/01 16:00 | Matthias Bachinger v Enrique Lopez-Perez | 6-4,6-3 |
| Challenger Mallorca | 2018/08/31 11:35 | Nicola Kuhn v Enrique Lopez-Perez | 1-6,6-7 |
| Challenger Champaign | 2018/11/13 18:45 | Tak Khunn Wang v JC Aragone | 6-3,6-1 |
| Challenger Knoxville | 2018/11/06 20:50 | JC Aragone v Bradley Klahn | 2-6,6-7 |
| 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 |