Sports Cincinnati Bengals guard Clint Boling announces retirement from NFL at age 30 July 15, 2019Tyler Dragon, Cincinnati EnquirerComments Off on Cincinnati Bengals guard Clint Boling announces retirement from NFL at age 30 Cincinnati Bengals guard Clint Boling, 30, has decided to retire from the NFL. It's 'time for me to step away from the game due to medical reasons.'