Stadium: Court 1 Round: 25 Ground: Clay
| ITF M25 Tucson | 2019/01/08 18:35 | Luis Patino v Nicolas Alvarez | 6-4,6-2 |
| Challenger Buenos Aires | 2018/11/11 17:00 | Bastian Malla v Nicolas Alvarez | 1-6,7-5,6-0 |
| Challenger Montevideo | 2018/11/03 14:30 | Nicolas Alvarez v Gonzalo Villanueva | 2-6,0-6 |
| Challenger Guayaquil | 2018/10/30 15:30 | Nicolas Alvarez v Pedro Sousa | 4-6,4-6 |
| Challenger Lima | 2018/10/23 20:35 | Emilio Gomez v Nicolas Alvarez | 6-4,6-4 |
| Challenger Santo Domingo | 2018/10/07 15:55 | Nicolas Alvarez v Juan Pablo Varillas | 6-4,2-6,1-6 |
| Challenger Campinas | 2018/10/02 18:10 | Rogerio Dutra Silva v Nicolas Alvarez | 6-3,6-3 |
| Challenger Campinas | 2018/10/01 13:00 | Oscar Jose Gutierrez v Nicolas Alvarez | 3-6,5-7 |
| ITF - Naples M15 | 2019/01/15 15:30 | Facundo Mena v Jesse Witten | 6-3,6-2 |
| ITF - Naples M15 | 2019/01/14 17:00 | Jesse Witten v Lucas Renard | 6-3,6-2 |
| Challenger Lexington Qual | 2018/07/29 13:00 | Mikael Torpegaard v Jesse Witten | 6-3,2-6,7-5 |
| Challenger Lexington Qual | 2018/07/28 18:05 | Jesse Witten v N. Vijay Sundar Prashanth | 6-4,6-4 |
| Challenger Lexington Qual | 2018/07/28 17:00 | Jesse Witten v N. V. Sundar S-Prashanth | 6-4,5-4 |
| ITF USA F5 | 2018/01/23 17:50 | Gonzalo Escobar v Jesse Witten | 6-2,6-2 |
| ITF USA F3 | 2018/01/12 22:40 | Javier Marti v Jesse Witten | 6-2,6-4 |
| ITF USA F3 | 2018/01/11 15:00 | Jesse Witten v Felipe Mantilla | 6-7,7-5,6-3 |