UFC 164: Henderson vs. Pettis 2 was a mixed martial arts event held on August 31, 2013, at the BMO Harris Bradley Center in Milwaukee, Wisconsin.

[3][4] The main event was expected to be a UFC Lightweight Championship bout between the current champion Benson Henderson and top contender T. J.

[6] Henderson and Pettis met in 2010 at the final event for World Extreme Cagefighting, WEC 53.

Pettis defeated Henderson via unanimous decision to win the final WEC Lightweight title in a bout that was widely praised by MMA fans and pundits alike as the fight of the year.

[7] Co-featured was a bout between two former UFC Heavyweight Champions, Frank Mir and Josh Barnett.