The final pre-broadcast fight ended with a freak leg injury due to a bad landing on a fall. Sacramento's James Irvin's right leg gave way while he was being taken to the mat by Thiago Silva. Looking at the replay, it appeared Irvin's leg twisted at a horrible angle above the ankle. Herb Dean stopped the fight at 1:06 of the first round.

The crowd booed Silva (10-0), a Chute Boxer from Brazil making his UFC debut, but it was an accident and Silva did nothing to deserve the reaction -- he fought a good, clean fight.

That's it for the undercard. Main show starts at 10 p.m. Eastern/7 Pacific.