The main event for UFC 164 has been announced, as UFC lightweight champion Benson Henderson will face T.J. Grant.

“UFC Tonight” confirmed the bout, which has been rumored for the August 31 card from Milwaukee since Grant defeated Gray Maynard to become the No. 1 contender.

Henderson (19-2) has successfully defended his belt three times, including a recent win over former Strikeforce champion Gilbert Melendez. He has also defeated Frankie Edgar, twice, and Nate Diaz.

Grant (21-5) made the move to lightweight and has won his last five, including that impressive showing vs. Maynard last month.

The card also includes Josh Barnett vs. Frank Mir, Chad Mendes vs. Clay Guida and Erik Koch vs. Dustin Poirier.