Nick Diaz was on his best behavior all week and then came yesterday's weigh-in for UFC 137. Diaz got in B.J. Penn's face and before Dana White could separate the fighters, the Strikeforce import threw a punch/elbow the Hawaiian's way.
If that shots hits Penn, Diaz would've been in a world of hurt and faced a big fine. Worse than that, what if Diaz hits Penn and B.J. couldn't fight tonight? Thankfully, that didn't happen.
Why did it happen? What makes Diaz tick? Yahoo! Sports' lead MMA writer Kevin Iole and former UFC fighter Frank Trigg sat down with myself on ESPN1100/98.9 FM's "The MMA Insiders" show in Las Vegas to explain the mental games played by both Diaz and Penn heading into tonight's tilt at the Mandalay Bay Events Center.
Roy Nelson and Tyson Griffin made the other news at the weigh-in. Nelson hits the scales in fat suit. He weighed-in at 252 pounds. Sources in his camp said he's closer to 245. That's good news. A...