Allen Park — Two Lions players who suffered concussions last Sunday were not at the team's facility Friday, coach Jim Schwartz said.
Tight end Tony Scheffler and rookie running back Theo Riddick both suffered the head injuries in the Lions' loss to the Packers in Green Bay and have missed practice every day this week, meaning their availability for Sunday's game in Cleveland is doubtful, at best.
Schwartz said Scheffler and Riddick have come to the facility for testing other days this week, but haven't stuck around for practice.
As of Friday, Schwartz didn't know how long the concussions would keep the two players out.
"You never know," he said. "That's the nature of concussions."
Scheffler didn't begin showing symptoms of the concussion until Tuesday, Schwartz said earlier this week. This is his third concussion in four years with the Lions.
Packers safety Jerron McMillian was fined $15,750 by the NFL on Friday for striking Scheffler in the head.
If Scheffler can't play, rookie tight end Joseph Fauria will have an expanded role.
If Riddick is out, running back Mikel Leshoure would likely be the No. 3 running back and take over Riddick's duties on special teams.