2018 Purdue Boilermakers Opponent First Down Split Stats through 01/07/2019
| Split | G | Rush | Pass | Penalty | Total |
|---|---|---|---|---|---|
| All Games | 13 | 118 | 163 | 26 | 307 |
| at Home | 7 | 56 | 91 | 16 | 163 |
| on Road/Neutral Site | 6 | 62 | 72 | 10 | 144 |
| in Wins | 6 | 46 | 85 | 8 | 139 |
| in Losses | 7 | 72 | 78 | 18 | 168 |
| vs. Conference | 9 | 81 | 120 | 18 | 219 |
| vs. Non-Conference | 4 | 37 | 43 | 8 | 88 |
| vs. Ranked (AP) | 3 | 16 | 50 | 9 | 75 |
| vs. Unranked (AP) | 10 | 102 | 113 | 17 | 232 |
| vs. FBS (I-A) | 13 | 118 | 163 | 26 | 307 |
| vs. FCS (I-AA) | 0 | 0 | 0 | 0 | 0 |
| vs. FBS Winning | 10 | 88 | 124 | 23 | 235 |
| vs. FBS Non-Winning | 3 | 30 | 39 | 3 | 72 |
| vs. FBS Power 5 | 12 | 115 | 150 | 23 | 288 |
| vs. FBS non-Power 5 | 1 | 3 | 13 | 3 | 19 |
| in August/September | 5 | 45 | 61 | 11 | 117 |
| in October | 3 | 19 | 49 | 3 | 71 |
| in November | 4 | 41 | 44 | 10 | 95 |
| in December/January | 1 | 13 | 9 | 2 | 24 |