2018 Illinois Fighting Illini Fourth Down Conversion Defense Split Stats through 01/07/2019
| Split | G | Attempts | Conversions | Conversion % |
|---|---|---|---|---|
| All Games | 12 | 17 | 10 | 58.82 |
| at Home | 6 | 11 | 5 | 45.45 |
| on Road/Neutral Site | 6 | 6 | 5 | 83.33 |
| in Wins | 4 | 11 | 5 | 45.45 |
| in Losses | 8 | 6 | 5 | 83.33 |
| vs. Conference | 9 | 8 | 5 | 62.50 |
| vs. Non-Conference | 3 | 9 | 5 | 55.56 |
| vs. Ranked (AP) | 3 | 1 | 1 | 100.00 |
| vs. Unranked (AP) | 9 | 16 | 9 | 56.25 |
| vs. FBS (I-A) | 11 | 15 | 10 | 66.67 |
| vs. FCS (I-AA) | 1 | 2 | 0 | 0.00 |
| vs. FBS Winning | 6 | 3 | 2 | 66.67 |
| vs. FBS Non-Winning | 5 | 12 | 8 | 66.67 |
| vs. FBS Power 5 | 9 | 8 | 5 | 62.50 |
| vs. FBS non-Power 5 | 2 | 7 | 5 | 71.43 |
| in August/September | 4 | 9 | 5 | 55.56 |
| in October | 4 | 3 | 1 | 33.33 |
| in November | 4 | 5 | 4 | 80.00 |
| in December/January | 0 | 0 | 0 | - |