Event: UFC 100
Date: Saturday, July 11, 2009
Location: Mandalay Bay Events Center in Las Vegas, Nevada

Main event:

UFC Heavyweight Champion Brock Lesnar (3-1) vs. Interim Heavyweight Champion Frank Mir (12-3) for undisputed division title

Main card (Televised):

170 lbs.: UFC Welterweight Champion Georges St. Pierre (18-2) vs. Thiago Alves (16-3)
170 lbs.: Jon Fitch (18-3) vs. Paulo Thiago (11-0)
185 lbs.: Dan Henderson (24-7) vs. Michael Bisping (17-1)
185 lbs.: Yoshihiro Akiyama (12-1) vs. Alan Belcher (14-5)

Under card (May not be broadcast):

205 lbs.: Stephan Bonnar (11-5) vs. Mark Coleman (15-9)
205 lbs.: Jon Jones (8-0) vs. Jake O’Brien (11-2)
170 lbs.: TJ Grant (14-2) vs Dong Hyun "Stun Gun" Kim (11-0-1)
155 lbs.: Mac Danzig (18-6-1) vs. Jim Miller (13-2)
185 lbs.: CB Dollaway (8-1) vs. Tom Lawlor (5-1)
155 lbs.: Matt Grice (9-2) vs. Shannon Gugerty (11-3)

*All fights officially confirmed by UFC.com.