Seahawks Slam Door on 49ers, Clinch NFC West and No. 1 Seed

Seattle entered the regular-season finale with everything on the line and left with home-field advantage throughout the NFC playoffs, dismantling the 49ers’ division hopes with a composed, physical performance on Saturday night.

The 13–3 victory was not flashy, but it was authoritative. The Seahawks controlled the tempo from the opening series and never allowed San Francisco to find rhythm, turning a high-stakes rivalry into a one-sided affair.

Quarterback Sam Darnold made a bit of history along the way, becoming the first passer to post back-to-back 14-win, 4,000-yard seasons, yet the night belonged just as much to Seattle’s rushing attack and its punishing defensive front.

For the 49ers, the loss was a gut punch. Their pursuit of the NFC West title ended with stalled drives, battered bodies, and the realization that their biggest game of the season slipped away before they ever truly seized control.

1. Ground Control

Seattle’s commitment to the run defined the game from the start. Kenneth Walker III and Zach Charbonnet alternated carries, consistently churning out positive yardage and wearing down a San Francisco front that never found an answer. The duo combined for 171 rushing yards, repeatedly setting up manageable third downs and keeping Darnold out of risky situations. Seattle’s offensive line, often questioned earlier in the season, imposed its will when it mattered most. The pivotal sequence came late in the third quarter. Clinging to a 10–3 lead, Seattle faced third-and-17 near midfield. Rather than putting the ball in the air, Darnold pitched to Walker, who ripped off a stunning 19-yard run to move the chains. The camera quickly found 49ers general manager John Lynch, his visible frustration echoing the mood of the stadium. It was the play that symbolized the night: Seattle dictating terms, San Francisco reacting helplessly.

2. Winning Without the Splash Plays

Despite controlling the ball, Seattle didn’t overwhelm the scoreboard. Charbonnet’s 27-yard first-quarter run stood as the game’s lone touchdown, with the Seahawks settling for field goals the rest of the way. Still, the numbers told a clear story. Seattle piled up 361 total yards to San Francisco’s 173, nearly doubling the 49ers in production even as the score remained within reach deep into the third quarter. Turnovers have haunted Seattle throughout the season, leaving them among the few playoff teams with a negative differential. That trend did not continue Saturday, as Darnold protected the football and the Seahawks finished the night without a giveaway. The clean execution allowed Seattle to stay patient. They never chased points, never pressed unnecessarily, and never let the moment — or the rivalry — pull them out of their disciplined approach.

3. Defense Delivers the Knockout

If Seattle’s run game set the tone, its defense provided the finishing blow. Brock Purdy arrived in Week 18 on a heater, with 13 touchdown passes over his previous three games, but Seattle smothered him from the opening drive. The Seahawks sacked Purdy three times and registered eight quarterback hits, collapsing the pocket and forcing hurried throws. For the first time in nine starts this season, Purdy was held without a touchdown pass. San Francisco struggled to establish anything downfield, managing just 173 total yards and watching drive after drive stall under relentless pressure. Even when the 49ers briefly threatened, Seattle’s front quickly shut the door. Late in the fourth quarter, Purdy took a brutal hit that left him bloodied and underscored the physical imbalance between the teams. It was a sobering end to a season finale that never tilted back in San Francisco’s favor.