The trenches
| Pass rush | sack rate | stopped behind the line | faces | sacks allowed | pairing |
|---|
| NU pass rush | 4.9% 6174th | 7.0% 129109th | faces IOWA | 1.9% 1069th | 3.4% ~1.1 sacks |
| IOWA pass rush | 9.0% 7820th | 7.4% 17596th | faces NU | 8.9% 56121st | 8.9% ~3.0 sacks |
sacks from CFBD play-by-play; college has no charted pressure, and these rates are not opponent-adjusted Measured on 7,926 team-games 2022–25: a college line's sacks-allowed rate carries +0.27 into its next game and a defence's sack rate only +0.10 — the line is most of this. The pairing predicts the game's sack rate +0.27, yards per dropback −0.16 and points added per play −0.15. Heaviest quarter of pairings against lightest: 7.8% vs 4.2% sack rate, 6.1 vs 7.2 yards per dropback.
IOWA with the ball
| IOWA offence vs NU defence | IOWA offence | NU defence | rank gap |
|---|
| points added per play | 0.17265th | 0.08380th | +15 |
| success rate | 0.43081st | 0.441106th | +25 |
| explosiveness (points added on successful plays) | 1.27949th | 1.12032nd | -17 |
| rush: points added per play | 0.23231st | 0.112100th | +69 |
| rush: success rate | 0.42689th | 0.472124th | +35 |
| rush: explosiveness | 1.3423rd | 0.86846th | +43 |
| pass: points added per play | 0.19483rd | 0.03538th | -45 |
| pass: success rate | 0.45060th | 0.40574th | +14 |
| pass: explosiveness | 1.219136th | 1.40633rd | -103 |
| standard downs: success rate | 0.51149th | 0.515123rd | +74 |
| passing downs: success rate | 0.241118th | 0.22827th | -91 |
| line yards per rush (the O-line) | 3.49522nd | 3.429131st | +109 |
| rushes stopped at or behind the line | 0.13227th | 0.14217th | -10 |
| short-yardage conversion rate | 0.529132nd | 0.59122nd | -110 |
| points per trip inside the 40 | 3.66782nd | 2.42117th | -65 |
| havoc allowed (TFL, forced fumbles, breakups per play) | 0.09914th | 0.16272nd | +58 |
| havoc allowed by the front seven | 0.0468th | 0.0637th | -1 |
| havoc allowed by the secondary | 0.05367th | 0.099131st | +64 |
| average starting field position (yards from own goal) | 68.400103rd | — | — |
NU with the ball
| NU offence vs IOWA defence | NU offence | IOWA defence | rank gap |
|---|
| points added per play | 0.30421st | -0.1458th | -13 |
| success rate | 0.46349th | 0.3004th | -45 |
| explosiveness (points added on successful plays) | 1.29445th | 1.03812th | -33 |
| rush: points added per play | 0.15654th | -0.2446th | -48 |
| rush: success rate | 0.41098th | 0.31919th | -79 |
| rush: explosiveness | 0.97865th | 0.3852nd | -63 |
| pass: points added per play | 0.54013th | 0.06851st | +38 |
| pass: success rate | 0.53713th | 0.3018th | -5 |
| pass: explosiveness | 1.64946th | 1.787120th | +74 |
| standard downs: success rate | 0.48578th | 0.3558th | -70 |
| passing downs: success rate | 0.41114th | 0.20915th | +1 |
| line yards per rush (the O-line) | 2.835104th | 2.60444th | -60 |
| rushes stopped at or behind the line | 0.19093rd | 0.19367th | -26 |
| short-yardage conversion rate | 0.81829th | 0.72775th | +46 |
| points per trip inside the 40 | 5.11112th | 2.1679th | -3 |
| havoc allowed (TFL, forced fumbles, breakups per play) | 0.13356th | 0.17381st | +25 |
| havoc allowed by the front seven | 0.112117th | 0.08240th | -77 |
| havoc allowed by the secondary | 0.0214th | 0.091129th | +125 |
| average starting field position (yards from own goal) | 72.40041st | — | — |
Rank gap = the defence's FBS rank minus the offence's on the same measure: +60 means the offence ranks 60 places better than the defence it faces. Unit against unit only — college has no player charting to name a matchup by.