2018 Marshall Thundering Herd Fourth Down Conversion Defense Split Stats through 01/07/2019
| Split | G | Attempts | Conversions | Conversion % |
|---|---|---|---|---|
| All Games | 13 | 25 | 11 | 44.00 |
| at Home | 6 | 8 | 3 | 37.50 |
| on Road/Neutral Site | 7 | 17 | 8 | 47.06 |
| in Wins | 9 | 21 | 9 | 42.86 |
| in Losses | 4 | 4 | 2 | 50.00 |
| vs. Conference | 8 | 15 | 6 | 40.00 |
| vs. Non-Conference | 5 | 10 | 5 | 50.00 |
| vs. Ranked (AP) | 0 | 0 | 0 | - |
| vs. Unranked (AP) | 13 | 25 | 11 | 44.00 |
| vs. FBS (I-A) | 12 | 23 | 10 | 43.48 |
| vs. FCS (I-AA) | 1 | 2 | 1 | 50.00 |
| vs. FBS Winning | 5 | 9 | 6 | 66.67 |
| vs. FBS Non-Winning | 7 | 14 | 4 | 28.57 |
| vs. FBS Power 5 | 2 | 0 | 0 | - |
| vs. FBS non-Power 5 | 10 | 23 | 10 | 43.48 |
| in August/September | 4 | 9 | 3 | 33.33 |
| in October | 3 | 7 | 3 | 42.86 |
| in November | 4 | 6 | 3 | 50.00 |
| in December/January | 2 | 3 | 2 | 66.67 |