Ashlee Rezin/Sun-Times
Bears quarterback Justin Fields won’t practice Wednesday, head coach Matt Eberflus said, and remains doubtful for Sunday’s game against the Raiders.
Rookie Tyson Bagent will start Sunday against the Raiders and veteran Nathan Peterman will be the second-stringer.
Fields is working with Bears trainers after dislocating his right thumb when his throwing arm was slammed into the ground on a sack in the third quarter Sunday. Fields tried to lobby to return to the game but couldn’t grip the ball with his right hand.