July 31, 2010: In a rematch of their war from February 2009, WBA/WBO lightweight champion Juan Manuel Marquez (51-5-1, 37 KOs) again defeated former unified lightweight champion Juan Diaz (35-4, 17 KOs) on Saturday night at the Mandalay Bay Events Center in Las Vegas. In another spirited give-and-take affair, Marquez had the upper hand almost from the get-go as he methodically battered Diaz, but couldn’t break him as the game Texan went the full twelve. Scores were 116-112, 118-110, 117-111 with Marquez taking a unanimous decision.