Yearbook, July 9: The Zidane head-butt

July 9, 2006: This day six years ago brought an infamous World Cup moment: French soccer legend Zinedine Zidane almost inexplicably head-butted Italian defender Marco Materazzi late in extra time of the final, earning Zidane a red card ... and creating the everlasting image of Zidane walking past the World Cup trophy and into the tunnel, never to play soccer again. (The Italians won on penalties.)