Panthers running back DeAngelo Williams is questionable for Sunday’s home opener against the Lions. After going through a full practice Wednesday, Williams missed his second straight day Friday with a thigh injury.”I’m concerned. He’s a running back and he’s got to rely on that burst” head coach Ron Rivera said. “If he’s just the slightest bit hampered by it, then they’ll (hold him out).”If Williams doesn’t play, Jonathan Stewart, Mike Tolbert and Fozzy Whittaker will share carries.Quarterback Cam Newton, who missed the season-opening win against the Bucs, is listed as probable.”To me, there’s no doubt,” Rivera said, when asked if Newton is still on track to start.Defensive end Greg Hardy is also probable. He has to be on the official injury report after missing Wednesday for personal reasons, but he will play against the Lions.Tackle Garry Williams popped up on the injury report Friday. He’s questionable after undergoing an MRI on a sore hip.Linebacker Jason Williams, who missed Wednesday’s and Thursday’s practices with a thigh injury, is questionable.Also on Friday, tight end Greg Olsen returned after spending Thursday with his family and son.”So far — knock on wood — things have gone well for T.J.,” Rivera said.