Watch Brock Lesnar vs. Frank Mir 2 full fight video to see Lesnar dominate his rematch with Mir at UFC 100 on July 11, 2009, in Las Vegas.
In their first meeting, it was the more experienced Mir that surprised Lesnar with a kneebar submission just 90 seconds into what was Lesnar’s UFC debut. The second fight saw Mir enter as interim heavyweight champion while Lesnar carried the undisputed title and “The Next Big Thing” unified the belts in emphatic fashion by bludgeoning Mir with ground strikes in round two.
It was the first of two successful title defenses for Lesnar, who emerged as one of the biggest draws in UFC history during his time with the promotion.