Sports

Panthers Mike Tolbert out vs Ravens with hairline fracture; Jonathan Stewart has sprained knee

  • Carolina Panthers' Jonathan Stewart (28) is forced out of bounds by Pittsburgh Steelers' Ryan Shazier (50) during an NFL football game Sunday, Sept. 21, 2014, in Charlotte, N.C. (AP Photo/The Star, Ben Earp)

    Carolina Panthers' Jonathan Stewart (28) is forced out of bounds by Pittsburgh Steelers' Ryan Shazier (50) during an NFL football game Sunday, Sept. 21, 2014, in Charlotte, N.C. (AP Photo/The Star, Ben Earp)  (The Associated Press)

  • Carolina Panthers' Jonathan Stewart (28) is hit by Pittsburgh Steelers' Mike Mitchell (23) during the first half of an NFL football game in Charlotte, N.C., Sunday, Sept. 21, 2014. (AP Photo/Mike McCarn)

    Carolina Panthers' Jonathan Stewart (28) is hit by Pittsburgh Steelers' Mike Mitchell (23) during the first half of an NFL football game in Charlotte, N.C., Sunday, Sept. 21, 2014. (AP Photo/Mike McCarn)  (The Associated Press)

Panthers coach Ron Rivera says Pro Bowl fullback Mike Tolbert has a hairline fracture in his right leg and running Jonathan Stewart has a severely sprained right knee, adding to the team's mounting injury problems in the backfield.

Rivera says Tolbert won't play Sunday at Baltimore and will be reevaluated on a week-to-week basis, while Stewart will be reassessed on Friday.

Both injuries were sustained in Carolina's 37-19 loss to the Steelers on Sunday night.

The Panthers were already dangerously thin in the backfield with running backs DeAngelo Williams and Fozzy Whittaker both held out Sunday night because of hamstring injuries.

Carolina's running game ranks 29th in the league, averaging just 72.3 yards per game on the ground.

Richie Brockel is expected to start at fullback against the Ravens.

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