Stadium: Centre Court Round: 44 Ground: Clay
| ITF Bolivia F1 | 2018/09/11 21:10 | Alex Blumenberg v Luciano Doria | 2-6,5-7 |
| ITF Bolivia F1 | 2018/09/10 18:00 | Jose Antonio Catala v Alex Blumenberg | 1-6,3-6 |
| ITF USA F22 | 2018/08/08 20:45 | Ryan Shane v Alex Blumenberg | 7-5,6-3 |
| ITF USA F22 Qual | 2018/08/06 14:35 | Jorge Montero v Alex Blumenberg | 4-6,3-6 |
| ITF USA F22 Qual | 2018/08/05 16:00 | Louis Siegler v Alex Blumenberg | 6-3,3-6,2-6 |
| ITF USA F22 Qual | 2018/08/04 16:00 | Alex Blumenberg v Alberto Lim | 7-6,6-4 |
| ITF USA F21 Qual | 2018/07/30 15:00 | Jonathan Chang v Alex Blumenberg | 6-2,6-1 |
| ITF USA F21 Qual | 2018/07/28 17:00 | Kaptan Kaster v Alex Blumenberg | 2-6,2-6 |
| ITF Brazil F4 | 2017/11/25 13:00 | Asdrubal Gobernate v Rafael Saraiva | 7-6,4-6,6-3 |
| ITF Brazil F3 | 2017/11/21 15:35 | Caio Silva v Rafael Saraiva | 6-2,6-4 |