Trent Richardson sat out organized team activities on Thursday with the Cleveland Browns due to a pulled muscle in his shin.
Richardson may miss the Browns' mandatory minicamp June 4-6.
"It's precautionary," Rob Chudzinski said. "We're holding him out. We've got minicamp in a week and a half. He may miss that. I'm not sure. We'll take it day-by-day.''
Richardson battled through injuries in his rookie season, leading the Browns to be cautious with him now.