Stadium: Hamilton Family Stadium Round: 24 Ground: Hardcourt indoor
| Challenger Stockton | 2018/10/04 16:30 | Blumberg, William v Noah Rubin | 1-6,6-4,4-6 |
| Challenger Stockton | 2018/10/02 17:00 | Blumberg, William v Aragone, JC | 3-6,6-2,6-2 |
| Challenger Stockton | 2018/10/01 17:00 | Vivero Gonzalez, Pablo v Blumberg, William | 4-6,1-6 |
| Challenger Stockton | 2018/09/30 17:00 | Blumberg, William v Steven Diez | 6-2,4-6,6-4 |
| Challenger Stockton | 2018/09/29 17:00 | Watson, Ross v Blumberg, William | 4-6,2-6 |
| Challenger Cary | 2018/09/12 17:00 | Blumberg, William v Hernandez-Fernandez, Jose | 4-6,3-6 |
| Binghamton, USA | 2018/07/26 15:45 | Blumberg, William v Lucas Catarina | 4-6,6-2,4-6 |
| ATP Newport Qual | 2018/07/15 16:25 | Bachinger, Matthias v Blumberg, William | 5-7,7-5,6-2 |
| Challenger - Cleveland | 2019/01/28 22:55 | Millot, Vincent v Torpegaard, Mikael | 3-6,3-6 |
| Challenger Columbus | 2019/01/11 17:00 | Torpegaard, Mikael v Millot, Vincent | 6-7,7-6,6-0 |
| Challenger Columbus | 2019/01/10 16:00 | Gastao Elias v Millot, Vincent | 4-6,6-1,1-6 |
| Challenger Columbus | 2019/01/08 19:50 | Millot, Vincent v Novikov, Dennis | 7-5,7-6 |
| Challenger Columbus | 2019/01/07 16:40 | Millot, Vincent v Kaichi Uchida | 6-4,6-4 |
| Challenger Calgary | 2018/10/17 00:05 | Quiroz, Roberto v Millot, Vincent | 1-6,7-5,6-1 |
| Challenger Calgary | 2018/10/14 17:10 | Millot, Vincent v Rochette, Laurent | 7-6,5-7,6-4 |
| Challenger Calgary | 2018/10/13 18:55 | Millot, Vincent v Nicholls, Shane | 6-2,6-1 |