The Seattle Seahawks turned Week 4 into a statement, running away from the Los Angeles Chargers 42-10 at home. There was never much doubt after the first half, as Seattle piled on points in every phase and left Los Angeles chasing a game that was gone before the fourth quarter. For a Chargers team still searching for an identity a month into the 2026 season, this was the kind of afternoon that lingers. Sam Darnold was surgical, throwing for 244 yards and three touchdowns while spreading the ball around and rarely facing pressure. Cooper Kupp was the primary beneficiary, piling up 131 receiving yards and consistently finding soft spots against a Chargers secondary that had no answers. Zach Charbonnet handled the ground work with 97 rushing yards, keeping the offense ahead of schedule and letting Seattle dictate tempo from start to finish. The balance was the story: when Los Angeles crowded the box, Darnold went over the top, and when they dropped back, Charbonnet took what was there. Defensively, Devon Witherspoon was the difference-maker, snatching two interceptions and repeatedly ending Chargers drives before they could build momentum. Byron Murphy II added a sack up front, part of a pass rush that kept Los Angeles uncomfortable all afternoon. Denzel Perryman led all defenders with seven tackles, but the volume told its own story about how much time the Chargers defense spent on the field. Witherspoon's second pick was the turning point, snuffing out any hope of a comeback and sending Seattle into cruise control the rest of the way.