Antônio Carlos Silva, is a Brazilian mixed martial artist who formerly competed in the heavyweight division of the UFC, known for being one of the five men, along with Fabrício Werdum, a Brazilian mixed martial artist and former Heavyweight Champion, of which organization?
Antônio Silva (fighter):  Known for being one of the five men (along with Tsuyoshi Kohsaka, Fabrício Werdum, Dan Henderson, and Matt Mitrione) to defeat Fedor Emelianenko in mixed martial arts competition. Fabrício Werdum: Fabrício Werdum (] ; born July 30, 1977) is a Brazilian mixed martial artist and former UFC Heavyweight Champion.
UFC