ST. LOUIS — Former Pro Bowl quarterback Trent Green has decided to retire, according to an online report.

Green, who began his career with San Diego in 1993, was released by St. Louis in February and opted to retire after 15 NFL seasons, FOXSports.com reported Friday.
Green, 38, earned a Super Bowl ring with the Rams in 2000 and twice played in the Pro Bowl (2003, 2005) for Kansas City, where he threw for more than 4,000 yards in three straight seasons. Severe concussions in 2006 and 2007 put Green’s career in jeopardy, but he re-signed with the Rams last season.
Green told FOXSports.com he reached the decision after talking it over with his family, “especially with the concussions over the last few years. We all felt it was the time to do it.”
Green also played four seasons in Washington.