Alabama running back Jam Miller is expected to sit out the team’s season opener at Florida State on Aug. 30 after undergoing a procedure to treat an upper-body injury, multiple media outlets reported Sunday.Miller sustained the injury during a scrimmage on Saturday at Bryant-Denny Stadium in Tuscaloosa, Ala.Coach Kalen DeBoer confirmed Miller went in for the procedure on Saturday evening.”Jam should recover fully with a timetable for his return yet to be determined,” he said in a statement issued Sunday.Miller, a senior, had 145 carries for 668 yards and seven touchdowns last season for No. 8 Alabama. He also had 16 catches for 155 yards and a score.