Claypool (toe) didn't participate in Thursday's practice session, Dale Lolley of DKPittsburghSports.com reports.
Although Claypool's recent MRI revealed that he avoided a season-ending toe injury, he's now missed two consecutive practice sessions to begin the week. If the 23-year-old is unable to suit up for Sunday's game against the Lions, James Washington and Ray-Ray McCloud would likely see additional work.