Trent Richardson is not expected to practice again until training camp after suffering an injury to the muscle behind his shin. In the wake of ESPN Cleveland speculating that the Browns have added multiple running backs this season in part because Trent Richardson has an injury history, we took a look back at his last five years to pinpoint just how many games he's missed. As a rookie in 2012 Richardson missed one game and was pulled from two others with less than 10 carries while playing through most of the year with two broken ribs. He still managed to total over 1,300 yards and 12 touchdowns. In college Richardson didn't miss a game as a junior, posting under 15 carries just twice. A left knee injury did cost him two games as a sophomore while he split time with Mark Ingram. The same knee stalled out both his combine work and preseason action in 2012 and has required multiple surgeries. As a freshman at Alabama he played sparingly and didn't get hurt. It's also worth noting that he missed his sophomore year in high school with an injury but obviously bounced back.