Mixon (foot) was spotted rehabbing on a side field at Wednesday's practice, Paul Dehner Jr. of The Athletic reports.
Mixon isn't ready to resume participating in team drills, but it's at least encouraging to see that he's handling rehab work. Ben Baby of ESPN.com noted that coach Zac Taylor has been heartened by the running back's progress, but Mixon will still likely need to upgrade his practice activity over the next two days to have a shot at playing Sunday in Pittsburgh.