Ex-New York Giants LB Devon Kennard announces retirement from NFL
Lions rookie offensive tackle Zein Obeid announces retirement
Detroit Lions - Wikipedia
NFL veteran Jack Crawford announces retirement
20 years later, Barry Sanders 'not sure' he'd change 'clumsy' retirement
Offensive tackle Nate Chandler retires - NBC Sports
Detroit Lions: Calvin Johnson Officially Retires from NFL
Former Bison great Emanuel announces his retirement from NFL
Lions DT John Penisini announces retirement - Pride Of Detroit