Las Vegas Raiders quarterback Jimmy Garoppolo will not play in Sunday's game against the Los Angeles Chargers at SoFi Stadium, as he remains in the NFL's concussion protocol and did not travel with the team, a source told ESPN on Saturday night.

With Garoppolo out, the Raiders will turn to either rookie Aidan O'Connell, a fourth-round draft pick who excelled in the preseason but has yet to be active for a regular-season game, or 15th-year veteran Brian Hoyer, who has not had an NFL start since Oct. 2, 2016, and has lost 12 straight starts.