49ers vs. Seahawks Prediction Market: Prices & Props for NFC West Showdown

The Seattle Seahawks enter Sunday's divisional showdown against the San Francisco 49ers as 61% favorites on Kalshi, despite the visitors arriving with an unbeaten record.

The matchup pits the defending Super Bowl champions against a 49ers team looking to avenge last season's playoff elimination and take another step toward control of the NFC West.

Market Snapshot

• Game winner: Seahawks to win 61% | 49ers to win 39%
• Spread: Seahawks to win by more than 3.5 points — 47%
• Total: Over 46.5 points — 49%
• Trading volume: $4.68 million+
• Date: Sunday, October 11, 2026
• Kickoff: 4:25 p.m. EDT
• Venue: Lumen Field, Seattle
• Broadcast: FOX

Kalshi prices as of 10 a.m. EDT on October 11, 2026.

Quick Brief

Seattle enters the NFC West showdown with a 3-1 record and a clear prediction market advantage over undefeated San Francisco (4-0). The Seahawks have won their last two meetings with their division rivals, including a 41-6 victory in January's NFC divisional playoffs.

The matchup offers an early test of the division hierarchy, and will provide additional perspective on what shapes up as one of the league’s tightest races. While Seattle has the recent series advantage, San Francisco's impressive start suggests a stiffer test this time around. 

Seahawks vs. 49ers Prediction Market Props

The quarterback markets are considerably closer than the overall win probabilities. Sam Darnold and Brock Purdy have similar outlooks for reaching 225 passing yards and throwing multiple touchdowns.

Smith-Njigba's strong start makes his receiving yardage contract particularly notable, while McCaffrey's rushing market offers another measure of San Francisco's offensive balance. Both players could play significant roles in determining whether their teams can sustain drives against two of the league's stronger defenses.

Seahawks vs. 49ers Matchup Preview

The Seahawks opened the season at 2-0, but had a misstep in Week 3 with a 33-31 upset road loss to the Commanders. Seattle bounced back with a 30-23 home win over the Chargers, capitalizing on four turnovers by the visitors, with Emanuel Wilson finding the end zone twice.  

The 49ers opened the season with an impressive 27-7 victory over the preseason Super Bowl favorite Rams in Australia and have won three of four games by double digits. San Francisco visits Seattle in the underdog role looking to reverse Seattle’s recent series dominance.  

Here are some key factors shaping Sunday's matchup:

• Defending champions: The reigning Super Bowl champs defeated San Francisco twice in January, including the divisional playoff rout.
• Defensive strength: The Seahawks have allowed 18.3 points per game and just 144.8 passing yards per contest through four games.
• Smith-Njigba's production: The receiver has racked up 481 yards and six touchdowns, forming a potent connection with Sam Darnold.
• Backfield adjustment: Zach Charbonnet remains out, and Jadarian Price has been placed on IR, leaving Emanuel Wilson atop the RB depth chart.
• Perfect start: San Francisco has scored 30.5 points per game while allowing just 16.0 over its four-game winning streak.
• League leaders: The 49ers enter Week 5 as the NFL leader in point differential at +58, ahead of the Jaguars at +51.
• Purdy's efficiency: The quarterback has thrown 11 touchdown passes against one interception and emerged as an early MVP candidate. 
• Outstanding pass protection: The 49ers have not surrendered a sack through four games.
• Key absences: San Francisco defensive end Nick Bosa and fullback Kyle Juszczyk are out.
• Division lead: The 49ers (40%) are priced as the favorite in Kalshi’s NFC West market, ahead of the Seahawks (31%) and Rams (29%). 

Three Things to Watch

• Purdy against Seattle's pass rush: San Francisco's sack-free start faces a major test against a Seahawks defense capable of generating pressure without relying heavily on blitzes. Whether that protection holds up could shape the passing game.
• Seattle's passing attack: The Darnold-Smith-Njigba combination has had a prolific start to the season. With Nick Bosa sidelined, San Francisco could face challenges generating pressure and slowing them down.
• NFC West implications: San Francisco enters undefeated and holds a narrow lead in Kalshi's division winner market. A Seahawks victory would tighten the standings and strengthen Seattle's case in what is shaping up as a three-team division race.

For additional insight on trading NFL games, check out our complete guide to football prediction markets.