The Mitch Trubisky experiment in Pittsburgh is officially over after 4 games and a 1-3 record that has the team currently in last place in the AFC North division.

The Steelers are expected to replace veteran quarterback Mitch Trubisky as their starter after less than four full games in favor of rookie Kenny Pickett, NFL Network’s Ian Rapoport reported Monday.

Pickett, who was selected 20th overall by the Steelers in April’s NFL Draft, will likely make his first start on Sunday against the Bills.