Buffalo Bills rookie wide receiver Sammy Watkins injured his ribs again, leaving the game against the Detroit Lions and not returning during a 23-0 defeat.

Bills coach Doug Marrone didn't elaborate on Watkins' status going forward.

"Once the trainers cleared him to play, I was excited about it," Marrone said. "You never know. X-rays, tests, things like that. Shows up one day, doesn't show up the next day. Could be out, could be in. Depends on the player. Could be a week, could be four to six weeks, could be longer. I'm not getting into all of that."

Watkins looked like he was in pain following a hit by Lions linebacker Ashlee Palmer.

"It was a tight throw.," quarterback EJ Manuel said. "He just probably got a little banged up. He'll be fine."

Follow me on Twitter: @RavensInsider

Aaron Wilson covers the Ravens for The Baltimore Sun