Lock spent the entire 2025 season as Sam Darnold's backup during Seattle's Super Bowl run, attempting just three passes across five regular-season appearances. While 2025 third-round pick Jalen Milroe remains in Seattle and should benefit from another year of development, Lock still appears positioned to retain the No. 2 role behind Darnold entering 2026. Lock's familiarity with the system and prior starting experience provide stability in the backup spot, even if his opportunities have been limited. He's set to become a free agent after the upcoming campaign.