2018 Illinois Fighting Illini Third Down Conversion Defense Split Stats through 01/07/2019
| Split | G | Attempts | Conversions | Conversion % |
|---|---|---|---|---|
| All Games | 12 | 157 | 70 | 44.59 |
| at Home | 6 | 82 | 35 | 42.68 |
| on Road/Neutral Site | 6 | 75 | 35 | 46.67 |
| in Wins | 4 | 58 | 18 | 31.03 |
| in Losses | 8 | 99 | 52 | 52.53 |
| vs. Conference | 9 | 115 | 58 | 50.43 |
| vs. Non-Conference | 3 | 42 | 12 | 28.57 |
| vs. Ranked (AP) | 3 | 36 | 22 | 61.11 |
| vs. Unranked (AP) | 9 | 121 | 48 | 39.67 |
| vs. FBS (I-A) | 11 | 145 | 67 | 46.21 |
| vs. FCS (I-AA) | 1 | 12 | 3 | 25.00 |
| vs. FBS Winning | 6 | 72 | 35 | 48.61 |
| vs. FBS Non-Winning | 5 | 73 | 32 | 43.84 |
| vs. FBS Power 5 | 9 | 115 | 58 | 50.43 |
| vs. FBS non-Power 5 | 2 | 30 | 9 | 30.00 |
| in August/September | 4 | 53 | 21 | 39.62 |
| in October | 4 | 52 | 26 | 50.00 |
| in November | 4 | 52 | 23 | 44.23 |
| in December/January | 0 | 0 | 0 | - |