What happened: Drew Lock is slated to start at quarterback for the Seattle Seahawks against the Arizona Cardinals on Sunday as Sam Darnold sits out with a quadriceps injury. Darnold has been ruled out and is considered week-to-week. Lock is listed as questionable with an elbow injury but is on track to helm the offense.

Why it matters: Seattle enters Week 10 looking to rebound from a 34-17 loss to the Chicago Bears. Lock previously replaced an injured Darnold earlier this season, providing familiar continuity under center. With Darnold week-to-week, Lock takes over an offense trying to keep pace in the NFC West standings.

What to watch: The Seahawks host the Cardinals on Sunday, with Lock's practice participation and elbow status determining his final pregame designation.