Round: 54 Ground: Clay
| ITF Chile F1 | 2018/11/12 13:00 | Karl W W Mac-Leay v Lucas C R Crichigno | 6-4,3-6,6-1 |
| ITF Brazil F6 | 2018/10/21 13:00 | Igor Gimenez v Lucas C R Crichigno | 7-6,6-2 |
| ITF Bolivia F3 | 2018/09/24 15:30 | Matias Riva v Lucas C R Crichigno | 5-7,7-5,7-5 |
| ITF Bolivia F3 | 2018/09/23 14:00 | Lucas C R Crichigno v Pedro Ortega | 7-5,6-1 |
| ITF Argentina F6 | 2018/09/16 15:15 | Esteban Bruna v Lucas C R Crichigno | 6-2,6-4 |
| ITF Bolivia F1 | 2018/09/12 02:05 | Matias Franco Descotte v Lucas C R Crichigno | 6-2,6-0 |
| ITF Bolivia F1 | 2018/09/10 20:30 | Lucas C R Crichigno v Marcos Castares | 6-3,6-2 |