If there was any doubt UFC 137 tonight in Las Vegas will be a heated affair, former champ BJ Penn and Strikeforce kingpin Nick Diaz are sure to make things tense. Just check out the video and photo gallery from the weigh-ins to see what we mean:
http://www.youtube.com/watch?v=PqeujtKU8QU
[flickr set=72157627879304815]
The post Things heat up at UFC weigh-ins first appeared on Graciemag.