Running back Garrett Wolfe was taken to the hospital during the second half of Sunday's game and will remain hospitalized for another day with what is believed to be a lacerated kidney, a source told the Sun-Times.
Wolfe was knocked out of the loss to the Arizona Cardinals at Soldier Field with what the team described as a back injury, but Wolfe was urinating blood at halftime, and was taken for medical treatment and evaluation immediately.
The injury is not believed to be serious longterm, and it could be something that Wolfe heals from in two to four weeks. It's unknown how that would affect his roster status. The Bears went two games without running back Adrian Peterson while he nursed a sprain knee. Wolfe is considered a key special teams player.
The Bears also lost cornerback Charles Tillman and strong safety Al Afalava to shoulder injuries in Sunday's game.