2021 Purdue Boilermakers Fourth Down Conversion Defense Split Stats through 01/10/2022
| Split | G | Attempts | Conversions | Conversion % |
|---|---|---|---|---|
| All Games | 13 | 22 | 8 | 36.36 |
| at Home | 6 | 7 | 2 | 28.57 |
| on Road/Neutral Site | 7 | 15 | 6 | 40.00 |
| in Wins | 9 | 20 | 6 | 30.00 |
| in Losses | 4 | 2 | 2 | 100.00 |
| vs. Conference | 9 | 9 | 3 | 33.33 |
| vs. Non-Conference | 4 | 13 | 5 | 38.46 |
| vs. Ranked (AP) | 4 | 5 | 3 | 60.00 |
| vs. Unranked (AP) | 9 | 17 | 5 | 29.41 |
| vs. FBS (I-A) | 13 | 22 | 8 | 36.36 |
| vs. FCS (I-AA) | 0 | 0 | 0 | - |
| vs. FBS Winning | 8 | 15 | 7 | 46.67 |
| vs. FBS Non-Winning | 5 | 7 | 1 | 14.29 |
| vs. FBS Power 5 | 11 | 19 | 7 | 36.84 |
| vs. FBS non-Power 5 | 2 | 3 | 1 | 33.33 |
| in August/September | 4 | 8 | 2 | 25.00 |
| in October | 4 | 1 | 0 | 0.00 |
| in November | 4 | 7 | 3 | 42.86 |
| in December/January | 1 | 6 | 3 | 50.00 |