

Sunday, September 20 at 4:25 PM EDT
FinalSEA 31 ยท ARI 7Lines below are the pre-kickoff close.
SEA
-3.5
-218
Total
40.5
ARI
+3.5
+180
How games at these numbers have gone
- The key number. 3.5 sits half a point past 3, one of the margins games actually land on. That hook is most of what you are paying for or getting here.
- Spread 3.5 โ the 3-4 point band. In 1,756 games since 1999 the favorite covered 48.5% of the time โ a coin flip once the 95% range (46.2โ50.9%) is taken into account.
- Total 40.5 โ spread in the 3-7 point band. Games with a spread this size went over 49.5% of the time across 3,584 of them.
Last three seasons
SEA
22-18-2 ATS ยท 30-12 SU ยท 23-19 O/U
14-6 ATS away
ARI
19-20 ATS ยท 12-27 SU ยท 21-17 O/U
12-8 ATS away
Measured on 7,276 games with a closing line and a final score. Records cover three seasons and describe the team โ they are not a signal, and every situational split we measured lands at a coin flip. Context, not a pick โ see every band.
The Read
Seattle Seahawks open a 3.5-point favorite over Arizona Cardinals โ about 69% implied to win outright. The 40.5 total prices it near 22โ19, a low-scoring script.
Seattle Seahawks went 14โ3 in 2025 โ #1 of 32 by point differential (+11.2/g).
Arizona Cardinals went 3โ14 in 2025 โ #29 of 32 by point differential (-7.8/g), and were 2.4 wins unlucky versus their margin.
Arizona Cardinals face one of the NFL's toughest 2026 schedules (strength of schedule #3).
2025 team profiles
Seattle Seahawks
Arizona Cardinals