Anderson Silva is a martial artist.
Anderson da Silva ( [ ˈɐ̃deʁsõ ˈsiwvɐ ] ; born April 14 , 1975 ) is a Brazilian mixed martial artist and former UFC Middleweight Champion . UFC president Dana White and several mixed-martial-arts publications have called Silva the greatest mixed martial artist of all time . He is currently ranked the # 6 contender in official UFC middleweight rankings .