Defending middleweight champion Anderson Silva of Brazil challenges Japan's Yushin Okami in the middleweight title bout at the Ultimate Fighting Championship (UFC) 134 in Rio de Janeiro, Brazil, Saturday Aug. 27, 2011. Silva knocked out Okami in the second to defend his title. (AP Photo/Felipe Dana)
UFC 148 gallery
Silva vs. Sonnen II and Griffin vs. Ortiz highlight the card at UFC 148 in Las Vegas.