July 11, 2009: UFC 100

Brock Lesnar holds down Frank Mir during their heavyweight title bout during UFC 100 on July 11, 2009 in Las Vegas, Nevada.

Georges St-Pierre celebrates his victory against Thiago Alves during their welterweight title bout during UFC 100 on July 11, 2009 in Las Vegas, Nevada. St-Pierre defeated Alves by unanimous decision.

Brock Lesnar holds down Frank Mir during their heavyweight title bout during UFC 100 on July 11, 2009 in Las Vegas, Nevada. Lesnar defeated Mir by a second-round knockout.

Brock Lesnar reacts after knocking out Frank Mir during their heavyweight title bout during UFC 100 on July 11, 2009 in Las Vegas, Nevada.

Georges St-Pierre battles Thiago Alves during their welterweight title bout during UFC 100 on July 11, 2009 in Las Vegas, Nevada.

Georges St. Pierre, top, battles Thiago Alves during their welterweight title bout during UFC 100 on July 11, 2009 in Las Vegas, Nevada.

Georges St-Pierre, top, battles Thiago Alves during their welterweight title bout during UFC 100 on July 11, 2009 in Las Vegas, Nevada.

Stephan Bonnar is held by Mark Coleman during their light heavyweight bout during UFC 100 on July 11, 2009 in Las Vegas, Nevada. Coleman defeated Bonnar by unanimous decision.

Dan Henderson, right, connects with a right to knock out Michael Bisping during their middleweight bout during UFC 100 on July 11, 2009 in Las Vegas, Nevada.

Alan Belcher, right, throws a right at Yoshihiro Akiyama during their middleweight bout during UFC 100 on July 11, 2009 in Las Vegas, Nevada.

Stephan Bonnar is held by Mark Coleman during their light heavyweight bout during UFC 100 on July 11, 2009 in Las Vegas, Nevada. Coleman defeated Bonnar by unanimous decision.

Jim Miller, top, battles Mac Danzig during their lightweight bout during UFC 100 on July 11, 2009 in Las Vegas, Nevada. Miller defeated Danzig by unanimous decision.

Mac Danzig lays on his back against Jim Miller during their lightweight bout during UFC 100 on July 11, 2009 in Las Vegas, Nevada. Miller defeated Danzig by unanimous decision.

Dong Hyun Kim battles T.J. Grant during their welterweight bout during UFC 100 on July 11, 2009 in Las Vegas, Nevada. Kim defeated Grant by unanimous decision.

Jim Miller, top, battles Mac Danzig during their lightweight bout during UFC 100 on July 11, 2009 in Las Vegas, Nevada. Miller defeated Danzig by unanimous decision.

Jon Jones, right, connects with a right punch on Jake O'Brien during their light heavyweight bout at UFC 100 on July 11, 2009, in Las Vegas, Nevada.