2018 Washington State Cougars Opponent First Down Split Stats through 01/07/2019
| Split | G | Rush | Pass | Penalty | Total |
|---|---|---|---|---|---|
| All Games | 13 | 101 | 118 | 36 | 255 |
| at Home | 7 | 54 | 59 | 21 | 134 |
| on Road/Neutral Site | 6 | 47 | 59 | 15 | 121 |
| in Wins | 11 | 82 | 101 | 29 | 212 |
| in Losses | 2 | 19 | 17 | 7 | 43 |
| vs. Conference | 9 | 67 | 90 | 29 | 186 |
| vs. Non-Conference | 4 | 34 | 28 | 7 | 69 |
| vs. Ranked (AP) | 1 | 13 | 7 | 0 | 20 |
| vs. Unranked (AP) | 12 | 88 | 111 | 36 | 235 |
| vs. FBS (I-A) | 12 | 90 | 109 | 33 | 232 |
| vs. FCS (I-AA) | 1 | 11 | 9 | 3 | 23 |
| vs. FBS Winning | 6 | 52 | 58 | 20 | 130 |
| vs. FBS Non-Winning | 6 | 38 | 51 | 13 | 102 |
| vs. FBS Power 5 | 10 | 78 | 100 | 30 | 208 |
| vs. FBS non-Power 5 | 2 | 12 | 9 | 3 | 24 |
| in August/September | 5 | 40 | 32 | 18 | 90 |
| in October | 3 | 22 | 39 | 9 | 70 |
| in November | 4 | 28 | 37 | 8 | 73 |
| in December/January | 1 | 11 | 10 | 1 | 22 |