Seattle Seahawks vs Arizona Cardinals prediction and odds

Seattle and Arizona both enter this NFC West matchup at 1-0, but they arrive there in very different ways. The Seahawks needed a fourth-quarter defensive takeover after losing Sam Darnold on their opening series, while the Cardinals controlled their Week 1 win behind Jacoby Brissett and Mike LaFleur's new offense. Seattle is favored on the road, but its quarterback situation gives Arizona a much clearer route into the game.

This article is for informational purposes only and should not be construed as financial or investment advice. Past performance does not guarantee future results.

Seattle Seahawks vs Arizona Cardinals prediction snapshot

• Date: Sunday, September 20, 2026
• Kickoff: 1:25 p.m. MST / 4:25 p.m. ET
• Competition: NFL, Week 2
• Seattle Seahawks win: 66%
• Arizona Cardinals win: 35%

Seattle Seahawks vs Arizona Cardinals prediction

Seattle's 66% market position reflects more than the defending champions' reputation. Mike Macdonald's defense immediately looked like the unit that carried the Seahawks through last season, holding New England to 10 points and 277 yards before producing three fourth-quarter interceptions to complete a 13-10 comeback.

That defense is the strongest reason to support Seattle's favorite status. New England completed underneath throws in Week 1, but the Seahawks shut down attempts farther downfield: all three interceptions came on passes of 20-plus air yards. Arizona now has to find a way to sustain the efficient, methodical offense that worked against the Chargers without allowing Seattle's secondary to turn aggressive throws into takeaways.

The complication is Darnold. Seattle's starting quarterback is dealing with a glute soft-tissue injury suffered on the first series of the opener and is expected to miss Week 2. Drew Lock is therefore in line to start after completing 16 of 22 passes for 187 yards, a touchdown and no interceptions in relief. Lock played well, particularly when Seattle finally opened up the passing game in the fourth quarter, but a full road start against a division opponent creates a different test.

Arizona also gave the market something real to reconsider in Week 1. Brissett completed 27 of 37 passes for 277 yards with a touchdown and no interceptions in a 26-14 road win over the Chargers. The Cardinals generated 393 total yards, controlled possession for 37:31 and played from ahead throughout Mike LaFleur's head-coaching debut.

The Seahawks still have the deeper defensive foundation and a receiver capable of changing the game in Jaxon Smith-Njigba, but the quarterback gap is narrower with Lock starting. Arizona's path is to keep Brissett efficient, avoid the deep-ball mistakes Seattle punished against New England and force Lock to sustain drives rather than giving the Seahawks short fields.

That leaves Seattle as a clear favorite without making this a straightforward matchup. Its defense and recent head-to-head success support the 66% position, while Darnold's absence and Arizona's much cleaner offensive opener provide the strongest arguments against treating the market gap as decisive.

Seattle Seahawks vs Arizona Cardinals prediction-market odds

• Seattle Seahawks win - 66%
• Arizona Cardinals win - 35%

Market data as of September 16, 2026.

The market gives Seattle a substantial edge despite the Seahawks going on the road with uncertainty at quarterback. The defense, recent success against Arizona and Seattle's broader 2025 performance support that position, but Lock replacing Darnold is the main variable preventing the matchup from looking more one-sided.

Seattle Seahawks vs Arizona Cardinals game outlook

Seattle's preferred game script does not require Lock to carry the offense. The Seahawks can lean on a defense that has now repeatedly shown it can create negative plays and takeaways, use rookie Jadarian Price to keep early downs manageable and look for explosive opportunities through Smith-Njigba.

Price rushed 10 times for 52 yards in the opener, while Smith-Njigba caught eight passes for 122 yards and scored Seattle's only touchdown on a 45-yard fourth-quarter play. That connection with Lock matters because Arizona cannot simply assume the backup quarterback means Seattle will remove its downfield passing game.

Arizona's approach should look more controlled. Brissett was sacked only once by the Chargers and completed 73% of his attempts, while Trey McBride caught nine passes for 95 yards and a touchdown. McBride gives LaFleur a reliable middle-of-the-field answer against pressure and a way to keep the offense moving without repeatedly testing Seattle's defensive backs vertically.

The Cardinals also need to stay patient with the run game. Tyler Allgeier led Arizona with 61 yards on 17 carries in Week 1, while rookie Jeremiyah Love scored the opening touchdown. Even modest rushing efficiency can keep Brissett away from obvious third-and-long situations, where Macdonald's pressure and coverage packages become much harder to manage.

Seattle's extra rest is another small but genuine advantage. The Seahawks played their opener on September 9, four days before Arizona's game against the Chargers, giving them a longer recovery and preparation window for the division matchup.

The game becomes most favorable to Arizona if the Cardinals can play from ahead and force Lock into a high-volume passing role. Seattle's ideal script is the reverse: win early downs, protect the football and let its defense create the short fields or late-game takeaways that decided Week 1.

Team news and injuries

Seattle Seahawks

Sam Darnold's availability is the defining personnel issue. The quarterback has a glute soft-tissue injury, with Seattle saying the hip joint itself is unaffected and the problem is not considered long term. He did not practice Monday and is expected to miss the Arizona game, putting Drew Lock in line for the start.

Lock's Week 1 performance gives Seattle some reassurance. He completed 72.7% of his passes, averaged 8.5 yards per attempt and did not turn the ball over after being forced into the game with almost no starting-unit preparation. His chemistry with Smith-Njigba became particularly important late.

Seattle's defense also had to work through secondary injuries in the opener, yet still intercepted Drake Maye three times in the fourth quarter. Julian Love, Nehemiah Pritchett and Josh Jobe each produced an interception, with Jobe's end-zone takeaway sealing the game.

Arizona Cardinals

Jacoby Brissett remains firmly established as Arizona's starting quarterback after a composed opener. His 277-yard performance was built around efficient intermediate passing rather than a high-risk vertical game, which is a sensible template against Seattle's secondary.

Trey McBride remains the central matchup piece after a nine-catch, 95-yard Week 1 performance. His ability to work underneath and between zones gives Brissett a high-percentage option if Seattle takes away outside throws.

Rookie running back Jeremiyah Love was questionable entering the opener but played and scored Arizona's first touchdown. His presence alongside Tyler Allgeier gives LaFleur multiple backfield options, an important part of keeping the offense balanced against Seattle's pressure packages.

Key factors that could decide Seattle Seahawks vs Arizona Cardinals

Can Drew Lock keep Seattle's full offense available?

Lock was efficient against New England, but Arizona now has a full week to prepare specifically for him. Seattle needs more than safe throws and field position; it needs Lock to punish Arizona when the defense commits bodies to stopping the run or squeezes underneath routes. Smith-Njigba's explosiveness gives him the weapon to do it.

Can Jacoby Brissett avoid Seattle's takeaway traps?

Brissett did not throw an interception in Week 1, which is especially relevant against a Seattle defense that just produced three. The Seahawks want quarterbacks to become impatient and challenge tight windows downfield. Arizona's best response is likely to look similar to its opener: stay efficient, use McBride inside and make Seattle defend long drives.

Can Arizona keep Jaxon Smith-Njigba from deciding the game?

Smith-Njigba accounted for 122 of Seattle's 200 passing yards in Week 1 and delivered the offense's biggest play. His ability to separate underneath and turn a short completion into an explosive gain reduces the burden on Lock. Arizona must limit yards after the catch without opening easy space elsewhere in Seattle's passing game.

Seattle Seahawks vs Arizona Cardinals head-to-head

Seattle swept the two 2025 meetings, winning 23-20 in Arizona in September before taking the rematch 44-22 in November. The first game was much tighter, with Arizona erasing a 20-6 fourth-quarter deficit before Seattle drove for the winning field goal.

The second meeting showed why turnovers matter so much against Macdonald's defense. Seattle returned two Arizona fumbles for touchdowns and built a 35-0 first-half lead before the Cardinals could settle into the game.

The historical edge is relevant because much of Seattle's defensive structure remains intact, but Arizona has changed significantly under LaFleur and now has Brissett as its established starter. Those differences make the 2025 results useful context rather than a direct template for Sunday.

What could move Seattle Seahawks vs Arizona Cardinals odds before kickoff?

The biggest variable is Seattle's quarterback situation. Darnold is expected to miss the game, so any meaningful change in his status would materially alter the offensive outlook. If Lock starts as expected, Seattle's protection plan and his ability to handle Arizona's pressure looks become more important.

Secondary availability also matters for Seattle after the defense had to adjust during the opener. Any further limitation in that group would affect how aggressively Macdonald can disguise coverage and challenge Brissett's intermediate passing game.

For Arizona, late developments involving McBride, Love or the offensive line would carry particular weight because the Cardinals' most credible route is built on efficient, mistake-free offense. Seattle's defense is difficult enough without giving it obvious passing downs or short fields.

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