Moore left Thursday's practice early after he was slow to get up at the end of a play, Alaina Getzenberg of The Charlotte Observer reports.
Even if it isn't serious, the timing of the injury could prevent Moore from playing in Saturday's preseason game against Baltimore. The Panthers already figure to be missing fellow wideout Robby Anderson, who has been out from practice with a minor hamstring injury. Bill Voth of the Panthers' official site reports that Moore took a hard fall on his right side while diving for a pass in red-zone drills Thursday morning.