SharpBetz
NFL

Seattle Seahawks vs Arizona Cardinals

Sunday, September 20, 2026

Final Score Seahawks 31 - Cardinals 7
Spread: L Total: W

Matchup Analysis

This NFL matchup features Seattle Seahawks (1-0 (1-0)) traveling to take on Arizona Cardinals (1-0 (0-0)) at State Farm Stadium, Glendale, AZ. There's a meaningful 9.0-point gap in scoring margin between these two teams, tilting in favor of Cardinals. That kind of edge typically shows up in the final score if the favorite can avoid a slow start.

On offense, Cardinals averages 26.0 points per game, which exceeds what the Seahawks defense typically allows (10.0 PPG). That mismatch could give the home side opportunities to exploit. Seahawks's 13.0 PPG offense will be tested by a Cardinals defense surrendering just 14.0 PPG. The road team may need to manufacture points to keep pace.

Home field advantage is worth approximately 2.0 points in NFL, and Cardinals will look to leverage their home crowd. This shapes up as a lopsided affair. Our model projects Cardinals ahead by 11.0 points -- a margin that suggests this game could be decided well before the final buzzer. Within one standard deviation, outcomes range from Cardinals losing by 0 to losing by 0, illustrating the range of likely outcomes. This projects as a defensive, low-scoring affair, with both teams averaging around 16 PPG. Low-scoring games compress margins and make covering large spreads harder.

There's a notable gap between our projection and the betting market. A 14.5-point edge on Cardinals of this magnitude typically indicates the market is pricing in narrative rather than underlying performance metrics.

The market has this game at +3.5, but our model sees value on Cardinals with a 14.5-point edge. Our line: Cardinals -11.0. Combined with the total projection of 32 versus the market line of 40.5, there are opportunities to find value on both sides of this matchup.

Team Comparison

SEA Seahawks
Stat
ARI Cardinals
1-0 (1-0)
Record
1-0 (0-0)
13.0
PPG
26.0
10.0
Opp PPG
14.0

Current Odds

Team Moneyline Spread Total
SEA Seattle Seahawks
-218 -3.5 O 40.5
ARI Arizona Cardinals
+180 +3.5 U 40.5
Source: DraftKings Updated: Sep 21, 10:45 AM
Opening line: +3.5 / O/U 40.5

Model Projection

Team Moneyline Spread Total
SEA Seattle Seahawks
+379 +11 O 31.5
ARI Arizona Cardinals
-379 -11 U 31.5
Source: Model Updated: Sep 20, 9:58 AM

Our Picks

Spread L
Cardinals (opened at +3.5)
90% Confidence
Total W
Under (opened at 40.5)
85% Confidence

Key Matchup Factors

Key Matchup Factors:

  • Cardinals has a +9.0 scoring margin edge
  • Home field advantage adds 2.0 points for Cardinals
  • Expected scoring: Cardinals ~18, Seahawks ~14 (total ~32)

Recent Trends

Cardinals enters with an outstanding 1-0 (0-0) mark, establishing themselves as a legitimate contender this season. 1 wins reflects a program that has figured out how to close games and sustain a high level of play over a long schedule.

Seahawks's 1-0 (1-0) record speaks volumes about their quality. Road environments are always tougher, but elite teams find ways to win regardless of venue.

Look for red zone efficiency and third-down conversions to be the swing factors in this game. The team that finishes drives and gets off the field on defense will have the inside track.

Matchup Edges

Cardinals

Advantages

  • Strong 1-0 (0-0) overall record (100% win rate)
  • Home field advantage worth 2.0 points in our model
  • Strong offense averaging 26.0 PPG
  • Elite defense allowing just 14.0 PPG

Disadvantages

  • Allowing 14.0 PPG on defense leaves room for opponent scoring
  • Opponent still holds a 21% model win probability
  • Combined opponent scoring of 13.5 PPG creates variance risk

Seahawks

Advantages

  • Strong 1-0 (1-0) record (100% win rate) this season
  • Stout defense allowing just 10.0 PPG
  • Net scoring margin of +3.0 PPG per game

Disadvantages

  • Playing on the road, sacrificing 2.0 point of home field advantage
  • Anemic offense at just 13.0 PPG limits scoring ceiling
  • Facing a home offense (26.0 PPG) that exceeds road defense (10.0 PPG) by 16.0

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