Stadium: Cancha 2 Round: 46 Ground: Hardcourt outdoor
| Challenger Guadalajara Qual | 2018/04/14 20:30 | Felipe Mantilla v Tobias Simon | 7-5,7-6 |
| Challenger Leon Qual | 2018/04/21 16:55 | Felipe Mantilla v Mauricio Echazu | 6-3,7-5 |
| Challenger Guadalajara Qual | 2018/04/15 17:40 | Alejandro Gonzalez v Felipe Mantilla | 7-6,7-6 |
| Challenger Guadalajara Qual | 2018/04/14 20:30 | Felipe Mantilla v Tobias Simon | 7-5,7-6 |
| Challenger Mexico City Qual | 2018/04/08 20:00 | Felipe Mantilla v Juan Ignacio Londero | 4-6,3-6 |
| Challenger Mexico City Qual | 2018/04/07 21:20 | Felipe Mantilla v Emilio Gomez | 6-7,6-0,6-3 |
| Challenger Panama City | 2018/04/03 18:35 | Felipe Mantilla v Jan Choinski | 7-6,4-6,2-6 |
| Challenger Panama City Qual | 2018/04/01 18:10 | Juan Ignacio Londero v Felipe Mantilla | 5-7,6-2,7-6 |
| Challenger Panama City Qual | 2018/03/31 22:15 | Nicolas Mejia v Felipe Mantilla | 6-2,4-6,2-6 |
| Challenger Leon Qual | 2018/04/21 17:00 | Federico Zeballos v Tobias Simon | 4-6,6-4,3-6 |
| Challenger Guadalajara Qual | 2018/04/14 20:30 | Felipe Mantilla v Tobias Simon | 7-5,7-6 |
| ITF Tunisia F13 | 2018/04/04 10:30 | Clement Tabur v Tobias Simon | View |
| ITF Portugal F6 | 2018/03/28 09:30 | Karim-Mohamed Maamoun v Tobias Simon | 6-1,6-1 |
| ITF Portugal F6 | 2018/03/27 11:30 | Francisco Cabral v Tobias Simon | 6-7,4-6 |
| ITF Qatar F3 | 2018/03/14 13:30 | Tobias Simon v Omar Giacalone | 4-6,2-6 |
| ITF Qatar F3 | 2018/03/13 12:00 | Tobias Simon v Roman Khassanov | 6-3,6-4 |
| ITF Qatar F2 | 2018/03/09 12:30 | Jay Clarke v Tobias Simon | 6-4,7-6 |