JUNE 19, 2004 - The premier mixed martial arts event in the world returns to Las Vegas for UFC 48: Payback. In the main event, hall of famer Ken Shamrock meets Hawaiian fighting legend Kimo in a rematch of their battle 8 years ago. The co-main event is a battle for the UFC Heavyweight Championship between former champion Tim Sylvia and top submission fighter Frank Mir. The undercard features such UFC stars as Phil Baroni, Evan Tanner, Matt Hughes, "Charuto" Verissimo, Georges St. Pierre, and Matt Serra.