Saul Canelo Alvarez (C) of Mexico celebrates his sixth round knockout of Amir Khan of Great Britain (out of frame) following their WBC Middleweight Championship fight at the T-Mobile Arena, Saturday, May 7, 2016 in Las Vegas, Nevada. Saul Canelo Alvarez successfully defended his World Boxing Council middleweight title in spectacular fashion with a devastating sixth-round knockout of Amir Khan in Las Vegas.The 25-year-old Mexican dropped Khan with a straight right hand over a left jab that sent the Briton crumbling to the canvas with just 23 seconds left in the round. (Photo by John Gurzinski / AFP via Getty Images)