STRIKEFORCE World Welterweight (170 pounds) Champion Nick Diaz (23-7, 1 NC) will make his second title defense when he faces Brazilian powerhouse Evangelista Cyborg (18-13) in main event action and STRIKEFORCE World Middleweight (185 pounds) Champion “Jacare” Souza (13-2, 1 NC) will put his belt on the line for the first time when he...