Mason missed Wednesday's practice with a hamstring injury, Matt Barrows of The Athletic reports.

EDGE Analysis

Mason hasn't recorded a carry or drawn a target since Week 6 and has played just five snaps on offense over the last five games, but he remains a key member of San Francisco's special teams units, where he's logged double-digit snaps every contest this season. If Mason is unable to overcome his hamstring injury in time for Sunday's game in Philadelphia, Tyrion Davis-Price would step in as the No. 3 back behind Christian McCaffrey and Elijah Mitchell.