What happened: The former center played seven games during their lone season together in New York. He later argued that the quarterback needed more freedom to develop.
Why it matters: Darnold enters 2026 as Seattle's established starter after a career spanning five NFL teams. Kalil's support predates the turnaround that carried Darnold to Super Bowl LX.
By the numbers: In 2019, Kalil appeared in seven games. Darnold started 13, going 7-6 while completing 61.9% of his passes for 3,024 yards, 19 touchdowns and 13 interceptions.
What to watch: Seattle's 2026 opener will provide the next test of Darnold's encore.