Mathews (concussion) was a non-participant at Tuesday's practice.
Mathews reportedly hasn't made much progress in the NFL's concussion protocol, making him a long shot to suit up for Thursday's game against the Lions. Assuming Mathews misses another game, his snaps and touches will go to some combination of DeMarco Murray, Darren Sproles and Kenjon Barner. None of the three gets a big boost.