![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
![UFC 137 & 138: Penn vs. Diaz and Leben vs. Munoz : BJ Penn, Nick Diaz, Chris Leben, Mark Munoz, Not Provided: Movies & TV - Amazon.com UFC 137 & 138: Penn vs. Diaz and Leben vs. Munoz : BJ Penn, Nick Diaz, Chris Leben, Mark Munoz, Not Provided: Movies & TV - Amazon.com](https://m.media-amazon.com/images/I/817sjnA0RRL._AC_UF350,350_QL50_.jpg)
UFC 137 & 138: Penn vs. Diaz and Leben vs. Munoz : BJ Penn, Nick Diaz, Chris Leben, Mark Munoz, Not Provided: Movies & TV - Amazon.com
BJ PENN - Eleven years ago today I had the honor of going to war with my friend and MMA legend Nick Diaz 🤝 #UFC137 | Facebook
![Amazon.com: UFC 137 & 138: Penn vs. Diaz and Leben vs. Munoz : BJ Penn, Nick Diaz, Chris Leben, Mark Munoz, Not Provided: Movies & TV Amazon.com: UFC 137 & 138: Penn vs. Diaz and Leben vs. Munoz : BJ Penn, Nick Diaz, Chris Leben, Mark Munoz, Not Provided: Movies & TV](https://m.media-amazon.com/images/I/51kyscDIaSL._SR600%2C315_PIWhiteStrip%2CBottomLeft%2C0%2C35_PIStarRatingFOURANDHALF%2CBottomLeft%2C360%2C-6_SR600%2C315_ZA14%2C445%2C290%2C400%2C400%2CAmazonEmberBold%2C12%2C4%2C0%2C0%2C5_SCLZZZZZZZ_FMpng_BG255%2C255%2C255.jpg)