Written before the game and kept as published. Final: Detroit Lions 45, Arizona Cardinals 21 — the graded call is above.
The Lions travel to face the Cardinals in Week 5. Our power ratings put the Cardinals 31st of 32 at -4.4 (Below Avg tier) and the Lions 13th at +0.6 (Average tier) — a 5.0-point gap that home field narrows to a 1.5-point line on the Lions, 54% to win. It rates as the 8th-widest of the 15 games in Week 5.
The sharpest unit gap in the game runs one way: the Lions offense grades +2.1 (9th of 32) against a Cardinals defense at -3.8 (30th) — 5.9 points of separation on our scale, and the single biggest reason the line sits where it does. Going the other direction, the Cardinals offense (-0.6, 22nd) meets the Lions defense (-2.0, 24th), a 1.4-point gap. One more tilt worth noting: special teams favors the Lions +0.5 (9th of 32) to -0.0 (29th).
Zoom out to the full season and the model projects the Cardinals at 6.0 wins (favored in 2 of 17) and the Lions at 9.6 (favored in 9) — 3.6 wins apart across the year. By win probability this is the 13th-hardest game on the Cardinals' schedule and the 12th-hardest on the Lions'.
The series is dead level: 8-8 across 17 regular-season meetings since 2002. They last met in 2024: Lions won 20-13 in September. Over their last 4 meetings the Cardinals are 0-4. History says these two are hard to separate, which is the one place it agrees with the ratings.
Calibration check, because a near-even number is the easiest kind to overtrust: across 3266 walk-forward games (2013-2024) the model gave a side 50-55% in 870 of them, and those sides won 52%. The Lions at 54% are in that band. A margin that thin is why we would rather wait for a price than call it a lean.
Kalshi listed this game as KXNFLGAME-26OCT11DETARI, and the contract has settled now that the game has been played. The last price we archived before kickoff is in the settled-market section on this page; there is no live price and no position left to take.
Prediction markets are not sportsbooks — you trade a contract that settles at $1 or $0, not a wager against a house line. Informational only; trade responsibly.