![UFC fighters Nick Diaz, right, and BJ Penn, left, square off during a weigh-in for UFC 137 in Las Vegas, Nevada on Friday, October 28, 2011. Photo by Francis Specker Stock Photo - Alamy UFC fighters Nick Diaz, right, and BJ Penn, left, square off during a weigh-in for UFC 137 in Las Vegas, Nevada on Friday, October 28, 2011. Photo by Francis Specker Stock Photo - Alamy](https://c8.alamy.com/comp/HBFHGG/ufc-fighters-nick-diaz-right-and-bj-penn-left-square-off-during-a-HBFHGG.jpg)
UFC fighters Nick Diaz, right, and BJ Penn, left, square off during a weigh-in for UFC 137 in Las Vegas, Nevada on Friday, October 28, 2011. Photo by Francis Specker Stock Photo - Alamy
![Nick Diaz, left, taunts BJ Penn during UFC 137 at the Mandalay Events Center in Las Vegas, Nevada on Saturday, October 29, 2011. Photo by Francis Specker Stock Photo - Alamy Nick Diaz, left, taunts BJ Penn during UFC 137 at the Mandalay Events Center in Las Vegas, Nevada on Saturday, October 29, 2011. Photo by Francis Specker Stock Photo - Alamy](https://c8.alamy.com/comp/HBFH1G/nick-diaz-left-taunts-bj-penn-during-ufc-137-at-the-mandalay-events-HBFH1G.jpg)
Nick Diaz, left, taunts BJ Penn during UFC 137 at the Mandalay Events Center in Las Vegas, Nevada on Saturday, October 29, 2011. Photo by Francis Specker Stock Photo - Alamy
![Nick Diaz, right, punches BJ Penn during UFC 137 at the Mandalay Events Center in Las Vegas, Nevada on Saturday, October 29, 2011. Photo by Francis Specker Stock Photo - Alamy Nick Diaz, right, punches BJ Penn during UFC 137 at the Mandalay Events Center in Las Vegas, Nevada on Saturday, October 29, 2011. Photo by Francis Specker Stock Photo - Alamy](https://c8.alamy.com/comp/HBFH25/nick-diaz-right-punches-bj-penn-during-ufc-137-at-the-mandalay-events-HBFH25.jpg)
Nick Diaz, right, punches BJ Penn during UFC 137 at the Mandalay Events Center in Las Vegas, Nevada on Saturday, October 29, 2011. Photo by Francis Specker Stock Photo - Alamy
![B.J. Penn's Camp Reveals Why He's Lost Respect for Nick Diaz | News, Scores, Highlights, Stats, and Rumors | Bleacher Report B.J. Penn's Camp Reveals Why He's Lost Respect for Nick Diaz | News, Scores, Highlights, Stats, and Rumors | Bleacher Report](https://cdn.bleacherreport.net/images_root/article/media_slots/photos/000/298/430/penndiaz_crop_340x234.jpg?1326146253)