Brian Urlacher wasn't sure how dominant he could be any longer, so he's calling it a career after 13 seasons with the Chicago Bears.
The eight-time Pro Bowl linebacker and NFL Defensive Player of the Year in 2005 announced his retirement through social media accounts Wednesday.
"After spending a lot of time this spring thinking about my NFL future, I have made a decision to retire," Urlacher said in a statement. "Although I could continue playing, I'm not sure I would bring a level of performance or passion that's up to my standards. When considering this, along with the fact that I could retire after a 13-year career wearing only one jersey for such a storied franchise, my decision became pretty clear."
In March, Urlacher and the Bears were unable to reach a contract agreement, and he became a free agent.
Veteran D.J. Williams and rookie Jon Bostic are expected to compete for the middle linebacker job with Urlacher gone.
Mike Krzyzewski decided to remain coach of the U.S. men's Olympic team. The Duke coach will try to lead the Americans to a third straight gold medal, a source said. Originally expected to step down, Krzyzewski will hold a news conference Thursday to confirm his return, the source said. He's coached the Americans since 2005, winning gold at the 2008 and 2012 Games.
Oregon received a formal notice of allegations in December related to the NCAA investigation into its use of recruiting services. The notice, released in response to public records requests, follows reports that Oregon already met with the NCAA Committee on Infractions last month. The NCAA has been looking into payments Oregon made to recruiting services, including a $25,000 payment to Willie Lyles and Houston-based scouting services in 2011. Lyles had a connection with an Oregon recruit. The NCAA won't comment on ongoing investigations.
Seventh-ranked Juan Martin del Potro pulled out of the French Open because of a respiratory virus. Andy Murray (back injury), Brian Baker (knee) and Mardy Fish (heart problems) had already pulled out of the Grand Slam event that begins Sunday at Roland Garros in Paris.
NASCAR honored members of its royal families with inductions into the Hall of Fame in Charlotte, N.C. Past champion Dale Jarrett joined father Ned in the hall and master mechanic Maurice "Chief" Petty became the fourth member of that family to be honored. Also selected were Tim Flock, Jack Ingram and Fireball Roberts. They will be inducted in January.