There may never be a bigger head butt. In the final of the 2006 World Cup in overtime! French superstar Zinedine Zidane playing in the last match of his career! head-butted Italy's Marco Materazzi after Materazzi allegedly insulted Zidane's family. Zidane was sent off with a red card, putting France a man down and precluding Zidane from participating in the shootout to decide the tournament's champion. That shootout was eventually won by Italy, 5-3.
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