| 9/1/2018 | Kentucky Christian (2-9) | 7 | at | Lamar | 70 | MSC (NAIA) | ||
| 9/8/2018 | Lamar | 0 | at | Texas Tech (5-7) | 77 | at B12 | ||
| 9/15/2018 | Northwestern State (5-6,4-5) | 49 | at | Lamar | 48 | |||
| 9/22/2018 | Southeastern Louisiana (4-7,4-5) | 30 | at | Lamar | 24 | |||
| 9/29/2018 | Lamar | 27 | at | Nicholls State (9-4,7-2) | 50 | |||
| 10/13/2018 | Incarnate Word (6-5,6-2) | 21 | at | Lamar | 27 | |||
| 10/20/2018 | Sam Houston (6-5,5-4) | 23 | at | Lamar | 41 | |||
| 10/27/2018 | Lamar | 24 | at | Stephen F. Austin (2-8,2-7) | 17 | |||
| 11/3/2018 | Lamar | 38 | at | Central Arkansas (6-5,5-4) | 24 | |||
| 11/10/2018 | Houston Baptist (1-10,0-9) | 9 | at | Lamar | 38 | |||
| 11/17/2018 | Lamar | 21 | at | McNeese State (6-5,5-4) | 17 | |||
| 11/24/2018 | Lamar | 13 | at | Northern Iowa (7-6) | 16 | at MVC |
| vs Lamar | vs Other Opponents | Lamar compared to OOs | |
| Record: | 5-7 | 54-70 | |
| Points Scored: | 28.33 | 27.56 | -0.77 |
| Points Allowed: | 30.92 | 31.20 | -0.28 |
| Margin: | -2.59 | -3.64 | -1.05 |
| Total Points: | 59.25 | 58.76 | 0.49 |