ALAMEDA, Calif. — Oakland Raiders quarterback Derek Carr returned to the practice field four days after breaking a bone in his back.

Carr took snaps and threw a few light passes Thursday during the open period of practice. E.J. Manuel is expected to start Sunday for the Raiders (2-2) against Baltimore (2-2).

Raiders Coach Jack Del Rio said Monday that Carr has a transverse process fracture in his back after taking a hard hit last week in Denver. Del Rio said the injury usually takes between two and six weeks to heal, although Cam Newton and Tony Romo came back after missing one game with similar injuries in 2014.

Left tackle Donald Penn talked to Carr earlier in the day and said the quarterback told him he was “very ahead of schedule.”

WASHINGTON: The NFL is looking into a situation Monday night at Arrowhead Stadium in Kansas City during which Washington wide receiver Terrelle Pryor said he was called racist names and cursed at by a fan.

Pryor posted on Instagram on Wednesday that it got so bad during the game against the Chiefs that a league employee had to stand by him from the second quarter on.

Pryor apologized to teammates and the organization for “flicking the person off.”

VIKINGS: Stevan Ridley, a third-round draft pick by New England out of LSU in 2011, is back in the game after signing with Minnesota.

He was at home in Mississippi, spending time with family and preparing for hunting season when Minnesota called.

Rookie star Dalvin Cook went down with a torn ACL in his left knee.

JETS: Running back Matt Forte remains sidelined with turf toe and a knee ailment, and could miss his second straight game.

Coach Todd Bowles said it would be unlikely Forte will play at Cleveland on Sunday if he doesn’t participate in practice Friday.