Stadium: Court 2 Round: 25 Ground: Clay
| ITF Germany F8 | 2015/07/21 15:55 | Felipe Mantilla v George Von Massow | 6-7,4-6 |
| ITF Netherlands F4 | 2018/08/14 10:00 | George Von Massow v Alexander Lazov | 4-6,3-6 |
| Challenger Pullach Qual | 2018/08/06 10:00 | Kimmer Coppejans v George Von Massow | 6-2,6-2 |
| Challenger Pullach Qual | 2018/08/05 11:50 | Andreas Haider-Maurer v George Von Massow | 5-7,6-7 |
| Challenger Pullach Qual | 2018/08/04 13:05 | George Von Massow v Marek Jaloviec | 6-4,4-6,6-3 |
| Challenger Liberec Qual | 2018/07/29 12:00 | David Poljak v George Von Massow | 7-6,7-6 |
| Challenger Liberec Qual | 2018/07/28 14:00 | George Von Massow v Andreas Haider-Maurer | 3-6,6-3,6-2 |
| Challenger Scheveningen Qual | 2018/07/16 10:00 | George Von Massow v Alejandro Davidovich Fokina | 3-6,2-6 |
| Challenger Scheveningen Qual | 2018/07/15 10:00 | Geoffrey Blancaneaux v George Von Massow | 6-3,0-6,1-6 |
| ITF Netherlands F4 | 2018/08/17 09:00 | Felipe Mantilla v Alexander Lazov | 1-6,6-4,2-6 |
| ITF Netherlands F4 | 2018/08/16 10:05 | Felipe Mantilla v Ryan Nijboer | 6-1,6-3 |
| ITF Netherlands F4 | 2018/08/15 08:00 | Felipe Mantilla v Alexander Merino | 6-1,6-3 |
| Challenger Braunschweig Qual | 2018/07/07 11:20 | Maxime Janvier v Felipe Mantilla | 6-2,6-2 |
| Challenger Braunschweig Qual | 2018/07/07 07:30 | Matthew Dellavedova v Felipe Mantilla | 2-6,2-6 |
| Challenger Marburg Qual | 2018/06/30 16:40 | Felipe Mantilla v Cristian Rodriguez | 3-6,2-6 |
| ITF USA F15 | 2018/06/19 16:05 | Marcos Giron v Felipe Mantilla | 6-1,7-6 |
| ITF USA F13 | 2018/06/14 18:00 | Brian Shi v Felipe Mantilla | 6-4,2-6,6-4 |