The Seahawks defense is a mess.
Since holding the Tua Tagovailoa-less Dolphins to three points in Week 3, Seattle has been pounded by the Lions and Giants, allowing 809 total yards in those games.
The Seahawks' run defense in particular was terrible.
In Week 3, Detroit's split backfield of Jahmil Gibbs and David Montgomery combined for 118 rushing yards.
Last week, with starting running back Devin Singletary out, the Seahawks ran the Giants wild, allowing rookie Tyrone Tracy Jr. to rush for 129 yards on 18 carries in his first career start.
Before this recent tough stretch, their run defense hasn't always been solid — in Week 2, the Seahawks allowed 185 rushing yards to the Patriots offense, one of the worst in football. .
It doesn't get any easier Thursday night.
The Seahawks, who have strengthened their defense in a short week, will have their hands full with an offense led by Kyle Shanahan, who has allowed the seventh-most yards per game this season (144).
Third-year ball carrier Jordan Mason played like a star for the 49ers in place of offensive player of the year Christian McCaffrey, who is still battling Achilles tendonitis.
Mason is averaging 107.2 rushing yards per game this season, third-most in the NFL.
Even against this weak defense, oddsmakers at BetMGM Sportsbook don't expect Mason to come close to that number, with his over/under in rushing yards listed at 82.5 (-125).
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Mason has exceeded that number in four of five games this year, but fell short against the Rams, where San Francisco relied on the pass late in the game to try to come back.
Bet on Mason's Cinderella-like run in the Pacific Northwest continuing.
Play: Jordan Mason, 82.5+ rushing yards (-125, BetMGM Sportsbook)
