Stadium: Center Round: 26 Ground: Hardcourt outdoor
| Challenger Binghamton | 2018/07/26 15:45 | William Blumberg v Lucas Catarina | 4-6,6-2,4-6 |
| ATP Newport Qual | 2018/07/15 16:25 | Matthias Bachinger v William Blumberg | 5-7,7-5,6-2 |
| Challenger Cary | 2017/09/14 19:00 | Mitchell Krueger v William Blumberg | 6-2,6-2 |
| Challenger Cary | 2017/09/12 20:00 | William Blumberg v Brydan Klein | 6-2,7-6 |
| US Open Qual | 2017/08/23 18:15 | Cem Ilkel v William Blumberg | 6-2,6-4 |
| Challenger Binghamton | 2017/07/29 15:00 | Jordan Thompson v William Blumberg | 4-6,6-3,6-3 |
| Challenger Binghamton | 2017/07/26 17:20 | William Blumberg v Denis Kudla | 6-3,6-2 |
| Challenger Binghamton | 2017/07/25 19:10 | William Blumberg v Luke Saville | 7-5,6-3 |
| Challenger Cary | 2018/09/10 19:30 | Jose Hernandez-Fernandez v Elias Ymer | 6-3,6-4 |
| Challenger Lyon | 2018/06/11 14:00 | Jose Hernandez-Fernandez v Antoine Hoang | 2-6,2-6 |
| Challenger Poznan Qual | 2018/06/04 16:35 | Jose Hernandez-Fernandez v Mathias Bourgue | 1-6,4-6 |
| Challenger Poznan Qual | 2018/06/04 10:50 | Jose Hernandez-Fernandez v Roberto Marcora | 7-6,6-4 |
| Challenger Poznan Qual | 2018/06/03 13:45 | Jose Hernandez-Fernandez v Alexei Popyrin | 6-4,6-2 |
| Challenger Vicenza Qual | 2018/05/28 09:00 | Martin Cuevas v Jose Hernandez-Fernandez | 6-2,6-4 |
| Challenger Vicenza Qual | 2018/05/27 11:00 | Juan Pablo Ficovich v Jose Hernandez-Fernandez | 6-7,3-6 |
| Challenger Vicenza Qual | 2018/05/26 11:20 | Zhizhen Zhang v Jose Hernandez-Fernandez | 4-6,6-7 |