On Saturday, Dec. 28, the UFC will host UFC 168: Weidman vs. Silva II from the MGM Grand Garden Arena in Las Vegas.The night’s main event features one of the biggest rematches in the sport’s history, as middleweight champion Chris Weidman looks to prove that his knockout of Anderson Silva at UFC 162 in July was no fluke. The undefeated Weidman stunned the Brazilian and the MMA world with the second-round finish of “The Spider