Seattle Seahawks vs San Francisco 49ers Preview, Betting Odds, and Predictions – NFL 2025-26 Season Week 1

Seattle Seahawks vs San Francisco 49ers Preview, Betting Odds, and Predictions – NFL 2025-26 Season 1 Week 1

The NFL season is underway and we have the Seattle Seahawks facing the San Francisco 49ers in a thrilling NFC West showdown at Lumen Field on September 7. Last season, the Seahawks finished 10-7 but missed the playoffs, while the 49ers struggled at 6-11, hampered by injuries.

Seattle, now led by QB Sam Darnold and a revamped offense, aims to leverage its stout defense and home-field advantage. The 49ers, with their roster healthy, look to reclaim their dominance. Both teams are hungry to set the tone in this rivalry game, with Seattle seeking to snap their home losing streak against San Francisco.

Recommended Bets	FanDuel	BetMGM
Total Points (Under 43.5)	-120	–125
Sam Darnold to rush for Under 9.5 yards	-114	-120
Brock Purdy Under 31.5 passing attempts	-128	-120

Analysis and Rationale

We chose the first bet for the Seahawks vs 49ers to stay under 43.5 total points because of Seattle’s defense, under Mike MacDonald, ranked 14th in total defense last season, bolstered by their corners Devon Witherspoon and Riq Woolen. The 49ers’ defense were ranked 8th in total defense and they also welcome back Robert Saleh as defensive coordinator, emphasizing aggressive plays. Both teams’ offenses face challenges with Seattle offensive line problems which could cause trouble for Sam Darnold, while 49ers’ injury-prone unit could falter early. Look for more of a defensive battle than a shootout in this contest.

For our second pick, Sam Darnold is likely to rush for under 9.5 yards as the new QB focuses on passing, and less on the run plays from what we saw last season. He only averaged 3.2 yards per rush attempt last season, and it’s highly unlikely that we’ll see a difference this season. And to add further to the problem, Seattle’s shaky O-Line further limits his scrambling opportunities.

Finally for our third pick, if their star running back Christian McCaffrey plays in the first game (listed as questionable for now), Brock Purdy is likely to stay under 31.5 passing attempts. 49ers’ run-heavy offense, led by their star running back, is the biggest reason why. Not to mention Seattle’s cornerbacks Witherspoon and Woolen who could force a conservative approach. The 49ers’ focus on clock control supports fewer passes made by Purdy in this matchup.

Seattle Seahawks vs San Francisco 49ers Preview

In the 2025-26 NFL Week 1 clash at Lumen Field, the Seattle Seahawks face the San Francisco 49ers in a fierce NFC West rivalry. Seattle’s going into the season with a lot of changes to their personnel, Sam Darnold as their QB1 instead of Geno Smith, the replacement of D.K. Metcalf with Cooper Kupp, to name a few. There are certainly higher expectations for the Seahawks this year, after having a decent campaign in 2024.

This Sunday, the volume rises. 📈 pic.twitter.com/Z4oEcG3Vbm
— Seattle Seahawks (@Seahawks) September 6, 2025

Meanwhile, the 49ers have bolstered their offense and just spent a lot of money re-signing Brock Purdy. Last season was disappointing for them as many players including Christian McCaffrey, Brandon Aiyuk, and many others were injured. This lead to slow starts for their offenses and ultimately a 6-11 record after a trip to the Super Bowl in 2023. However, this season the 49ers aim to bounce back with a healthier roster and there is no better way to start off the season with a win on a road game.

Seattle Seahawks Best Bets – Over/Under and Player Bets

Here is a look at over/under and player bets for the Seattle Seahawks as per BetMGM

Seattle Seahawks Over/Under Bets

Over/Under Bets	Over	Under
Jaxson Smith-Njigba Receiving Yards	59.5 (-110)	59.5 (-118)
Sam Darnold Passing Yards	202.5 (-115)	202.5 (-115)
Kenneth Walker III Rushing Yards	61.5 (-110)	61.5 (-118)

Seattle Seahawks Best Player Bets

Below are some of the best player bets as per BetMGM

Sam Darnold to have over 2.5 rushing attempts: -175
Sam Darnold to have over 0.5 interceptions thrown: -125
Jaxson Smith-Njigba to have under 5.5 receptions made: -165
Sam Darnold to have under 1.5 passing touchdowns: -200

San Francisco 49ers Over/Under Bets

Here is a look at over/under and player bets for the San Francisco 49ers as per BetMGM

Over/Under Bets	Over	Under
Brock Purdy Passing Yards	238.5 (-115)	238.5 (-115)
George Kittle Receiving Yards	65.5 (-110)	65.5 (-118)
Christian McCaffrey Rushing Yards	65.5 (+100)	65.5 (-130)

San Francisco 49ers Best Player Bets

Below are some of the best player bets for San Francisco 49ers as per BetMGM

Christian McCaffrey to score a touchdown anytime during the game: -170
Brock Purdy to throw under 0.5 interceptions: -125
Jason Pinnock to have under 5.5 tackles: -155
Brock Purdy’s first attempt to be completed: -300

Week 1 Seahawks vs 49ers Prediction for the 2025-26 NFL Season

While it may be hard to believe for some, but we believe that the Seahawks can pull out a win tonight. Seattle has a decent defense with Witherspoon and Woolen, which will challenge Brock Purdy’s passing game, forcing San Francisco to lean on Christian McCaffrey. However, Seattle’s home-field advantage and improved offensive line should protect Sam Darnold enough to make some critical throws, who manages efficient and short drives.

The 49ers injury-prone roster, as is the case with McCaffrey listed as questionable for now, should allow Seattle to make more plays on offense. We believe that it will be a low scoring game in the rivalry and Seattle’s desperation to snap a home losing streak should fuel the upset.

Sights on Seattle 👀@ShoePalace | #FTTB pic.twitter.com/DuoizFflYJ
— San Francisco 49ers (@49ers) September 6, 2025

Prediction: The Seahawks win the Game

Seahawks vs 49ers Betting Odds and Spread

While the Seahawks are extremely close, the moneyline and the spread shows that the 49ers are the minute favorite to win the matchup, as per BetMGM

Teams	Spread	Total Points	Moneyline
49ers	-1 (-110)	Over 43.5 (-110)	-118
Seahawks	+1 (-110)	Under 43.5 (-110)	-102

(According to BetMGM: BetMGM offers exclusive promo codes, bonus deals and accurate odds for users upon signing up. Use BetMGM to ace your betting game in all sports!)

FAQs

Why bet Under 43.5 total points for the game between 49ers vs Seahawks?
Seattle’s decent defense and 49ers’ aggressive unit, plus both team’ offensive struggles, favor a low-scoring game.

Why to pick Sam Darnold under 9.5 rushing yards?
Darnold focuses mostly on passing, averaging 3.2 yards per rush last season, and Seattle’s questionable O-line may limits scrambles, which makes this a safe bet.

Why to pick Brock Purdy under 31.5 passing attempts?
49ers’ run-heavy offense and Seattle’s tough secondary will likely limit Purdy’s passes if McCaffrey plays.

Eric Divakaran

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I cover the National Football League and things cannot get better than that. I always dreamed to play football or basketball professionally since I’m built like a Running Back. But now that I can’t, since I’m technically in the “Unc” age, I thought why not pick a career in sports industry? So here I am, doing what I love, and hoping that the Commanders win the Super Bowl. I give love to players when it’s due, but can be critical about their performances at the same time. Enough about me, now let my articles do all the talking.