2018 Iowa Hawkeyes Opponent First Down Split Stats through 01/07/2019
| Split | G | Rush | Pass | Penalty | Total |
|---|---|---|---|---|---|
| All Games | 13 | 101 | 98 | 15 | 214 |
| at Home | 7 | 50 | 53 | 6 | 109 |
| on Road/Neutral Site | 6 | 51 | 45 | 9 | 105 |
| in Wins | 9 | 62 | 65 | 12 | 139 |
| in Losses | 4 | 39 | 33 | 3 | 75 |
| vs. Conference | 9 | 76 | 72 | 11 | 159 |
| vs. Non-Conference | 4 | 25 | 26 | 4 | 55 |
| vs. Ranked (AP) | 2 | 18 | 16 | 1 | 35 |
| vs. Unranked (AP) | 11 | 83 | 82 | 14 | 179 |
| vs. FBS (I-A) | 12 | 99 | 88 | 13 | 200 |
| vs. FCS (I-AA) | 1 | 2 | 10 | 2 | 14 |
| vs. FBS Winning | 7 | 60 | 49 | 6 | 115 |
| vs. FBS Non-Winning | 5 | 39 | 39 | 7 | 85 |
| vs. FBS Power 5 | 11 | 91 | 82 | 12 | 185 |
| vs. FBS non-Power 5 | 1 | 8 | 6 | 1 | 15 |
| in August/September | 4 | 25 | 30 | 4 | 59 |
| in October | 4 | 26 | 32 | 7 | 65 |
| in November | 4 | 39 | 32 | 4 | 75 |
| in December/January | 1 | 11 | 4 | 0 | 15 |