'Bell cow' role for Muscle Hamster? 

August, 22, 2014
Aug 22
2:45
PM ET
As a rookie, Doug Martin cranked out 1,910 yards and a dozen touchdowns, while averaging 4.6 yards per carry and 9.6 yards per catch. Last season, he averaged only 3.6 yards per carry and 5.5 yards per catch in six games before his season ended due to an injury.