Stadium: Court 5 Round: 27 Ground: Clay
| 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 |
| ITF USA F13 | 2018/06/13 16:05 | Felipe Mantilla v JC Aragone | 6-3,6-7,7-6 |
| ITF Netherlands F4 | 2018/08/16 08:00 | Leonard Von Hindte v Alexander Lazov | 4-6,4-6 |
| ITF Netherlands F4 | 2018/08/14 10:00 | George Von Massow v Alexander Lazov | 4-6,3-6 |
| ITF Austria F3 | 2018/07/19 09:30 | Michal Konecny v Alexander Lazov | 3-6,4-6 |
| ITF Austria F3 | 2018/07/18 10:30 | Bogdan Borza v Alexander Lazov | 1-6,2-6 |
| ITF Austria F3 | 2018/07/17 12:00 | Philipp Schroll v Alexander Lazov | 6-7,6-7 |
| ITF Italy F12 | 2018/05/30 15:30 | Pietro Rondoni v Alexander Lazov | 6-2,7-5 |
| ITF Italy F12 | 2018/05/29 10:30 | Giovanni Fonio v Alexander Lazov | 5-7,5-7 |
| ITF Italy F11 | 2018/05/26 08:30 | Alexander Lazov v Pietro Rondoni | 5-7,3-6 |