Artistic Gymnastics

Alexander Naddour...United States Alexander Naddour competes on the rings during a qualification session at the Artistic Gymnastics World Championships in Antwerp, Belgium, Tuesday, Oct. 1, 2013. The event will take place until Sunday, Oct. 6. (AP Photo/Virginia Mayo)

Virginia Mayo/AP

Alexander Naddour, of the US, competes on the rings during heats at the Artistic Gymnastics World Championships in Antwerp, Belgium.