32 fighters, comprised of 16 welterweights and 16 lightweights, were selected for the opening round of the show. 16 fighters total will enter the house after the intial elimination process.
Mills (6-1) last fought on May 10, 2008 when he defeated Marios Zaromskis via TKO to win the vacant Cage Rage British 170-pound belt at Cage Rage 26 "Extreme" in Birmingham, England.
In November 2006, Mills fought current UFC fighter Paul Taylor to a no contest at Cage Rage's feeder promotion "Contenders" due to a fan in the crowd sounding off an airhorn. Both the fighters initially thought the noise signaled the end of the round, but Mills was the first to capitalize by applying a rear naked choke. Officials later changed the result to a no contest.
Should he make it in the house, Mills will fight on the UK team coached by Michael Bisping.