Anderson was sidelined during Wednesday's practice with a hamstring injury, Alaina Getzenberg of The Charlotte Observer reports.
The wideout observed the session in street clothes after suffering the injury late last week. The Panthers held key starters out of their preseason opener, and while many of those players are expected to suit up Saturday against Baltimore, it's possible Anderson won't be one of them. However, head coach Matt Rhule didn't sound worried about Anderson being in line for a long-term absence.