Stadium: Grandstand Round: 46
| Challenger Mexico City Qual | 2018/04/07 19:30 | Austin Krajicek v Shalva Dzhanashia | 6-3,6-3 |
| Challenger San Luis Potosi | 2018/03/29 22:15 | Austin Krajicek v Jose Hernandez-Fernandez | 0-6,2-6 |
| Challenger San Luis Potosi | 2018/03/29 01:10 | Paolo Lorenzi v Austin Krajicek | 7-6,1-6,3-6 |
| Challenger Irving | 2018/03/14 17:00 | Mikhail Kukushkin v Austin Krajicek | 6-7,6-4,7-5 |
| ITF Canada F2 | 2018/03/07 17:15 | Deiton Baughman v Austin Krajicek | 6-1,3-6,6-4 |
| Challenger Dallas | 2018/01/31 19:35 | Miomir Kecmanovic v Austin Krajicek | 7-6,6-7,7-6 |
| Challenger Dallas | 2018/01/30 01:50 | Austin Krajicek v Filip Peliwo | 6-3,6-3 |
| Challenger Newport Beach Qual | 2018/01/20 22:25 | Luke Bambridge v Austin Krajicek | 6-7,7-5,7-5 |
| Challenger Mexico City Qual | 2018/04/07 18:55 | Alexios Halebian v Carlos Ramirez Utermann | 6-3,6-0 |
| ITF USA F8 | 2018/03/20 19:05 | Mathias Bourgue v Alexios Halebian | 6-3,6-1 |
| ITF USA F7 | 2018/03/13 19:50 | Alexios Halebian v Jan Choinski | 2-6,1-6 |
| Challenger Morelos Qual | 2018/02/17 16:45 | Emilio Gomez v Alexios Halebian | 6-4,3-6,6-3 |
| Challenger San Francisco Qual | 2018/02/04 22:20 | Alexios Halebian v JC Aragone | 2-6,6-7 |
| Challenger San Francisco Qual | 2018/02/03 19:00 | Julian Zlobinsky v Alexios Halebian | 3-6,3-6 |
| Challenger Newport Beach Qual | 2018/01/20 18:00 | Alexios Halebian v Daniel Elahi Galan | 3-6,2-6 |
| ITF USA F2 | 2018/01/11 00:30 | Alexios Halebian v Kaichi Uchida | 6-7,1-6 |