The pride of Temple University is calling it a career. P.J. Walker, 31, announced his retirement from football, as he was playing in the Canadian Football League for the Calgary Stampeders. The team had announced he was taking a leave, but eventually confirmed he was stepping away from the game completely. After going undrafted and landing on the Colts’ practice squad from 2017-19, Walker got a chance to show off his skills in the XFL, where he played for the Houston Roughnecks and turned into