Troy Polamalu: Super Bowl Champion, Pro Bowler...College Graduate

Friday was Commencement Day at USC and among the hosts of student-athletes that received diplomas was a face very familiar to NFL fans.

Troy Polamalu was among those who celebrated graduation day in Los Angeles after returning to finish a degree in history. But he wasn't the only former Trojan football player who returned to school. Cincinnati Bengals linebacker Keith Rivers went back to finish a degree in Public Policy Development and Planning.

(H/T to Arash Markazi)