Against Pittsburgh, Eagles RB LeSean McCoy scored the game's first touchdown in the first quarter, but exited the game to have X-rays performed on his right thumb. They were negative. McCoy returned to the sideline, but his night was complete.
This is probably nothing to worry about, though it may take some time for the thumb to fully heal. At this point, Darren Sproles is the primary backup. Chris Polk is nursing a torn hamstring, but should be back soon.