stadio: Court 3 Round: 62 Ground: Hardcourt outdoor
| ITF USA F20 - Qual. | 2018/07/21 15:00 | Strong Kirchheimer v Kaptan Kaster | 6-2,6-2 |
| ITF USA F19B - Qual. | 2018/07/15 15:00 | Kaptan Kaster v Alexander Cozbinov | 0-6,3-6 |
| ITF Marocco F4 | 2017/10/28 12:00 | Kaptan Kaster v Nicolas Uryson | 2-6,4-6 |
| ITF Spagna F33 | 2017/10/08 13:00 | Sergi Perez Contri v Kaptan Kaster | 6-2,6-4 |
| ITF Spagna F33 | 2017/10/07 11:30 | Kaptan Kaster v Pol Fernandez | 6-7,7-6,6-3 |
| ITF Portogallo F21 | 2017/10/02 11:30 | Daniel Kopeinigg v Kaptan Kaster | 6-1,6-2 |
| ITF Portogallo F20 - Qual. | 2017/09/24 12:00 | Ivan Marrero Curbelo v Kaptan Kaster | 6-4,7-5 |
| ITF Portogallo F19 | 2017/09/20 11:30 | Kaptan Kaster v Pablo Vivero Gonzalez | 2-6,1-6 |
| ITF USA F20 - Qual. | 2018/07/22 16:30 | Alfredo Perez v Alex Blumenberg | 7-6,6-4 |
| ITF USA F20 - Qual. | 2018/07/21 15:00 | Bradley Holt v Alex Blumenberg | 6-7,2-6 |
| ITF USA F19B - Qual. | 2018/07/15 15:00 | Alexander Lebedev v Alex Blumenberg | 6-4,5-7,6-1 |
| ITF Brasile F2 | 2018/04/30 15:00 | Tomas Martin Etcheverry v Alex Blumenberg | 6-4,6-2 |
| ITF Brasile F2 | 2018/04/29 15:00 | Alex Blumenberg v Igor Sao Thiago | 6-4,5-7,6-4 |
| ITF Brasile F2 | 2018/04/28 17:30 | Alex Blumenberg v Enrico dos Santos Lima | 6-3,6-4 |
| ITF Brasile F1 | 2018/04/22 15:30 | Alex Blumenberg v Enrique Bogo | 3-6,4-6 |
| ITF Brasile F1 | 2018/04/21 16:00 | Laelson Rodrigues v Alex Blumenberg | 2-6,2-6 |