The Seattle Seahawks never stopped believing in Drew Lock. The last time he played in Seattle, Pete Carroll was still the head coach, but the organization knew the person that Lock was. Clearly, new head coach Mike Macdonald got the word on that, too.
Lock was brought back this offseason after spending last year with the New York Giants. At the time, the move seemed odd as the Seahawks still had backup Sam Howell, and the team had also signed Sam Darnold. But the team was remaking the locker room culture a bit, and Lock fit what the team wanted.