Zidane is known to be modest, quiet and admittedly shy. However, Zidane has occasionally shown a quick temper on the pitch. One such display occurred in a 2000/2001 Champions League match between Juventus Turin and Hamburger SV, in which Zidane headbutted Jochen Kientz; he received a red card for this action. He also received a red card and a two-game suspension for stamping on Saudi Arabia's team captain Fuad Amin in the 1998 World Cup, allegedly in response to an insult.In extra time of the 2006 World Cup final, he was sent off for head-butting Italy's Marco Materazzi. Overall, he was sent off 14 times in his career.