4: UFC 31
Held at the Trump Taj Mahal on May 4, 2001, UFC 31 was a historic show due to a wide range of reasons. The show was headlined by Randy Couture and Pedro Rizzo for the Heavyweight title and Couture managed to retain the title via a unanimous decision.
The card also played host to the debut of legendary BJ Penn who announced his arrival via a TKO win over Joey Gilbert.
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Chuck Liddell knocking out Kevin Randleman was yet another highlight of the event. Highlight reel spinning back fist KO that Shonie Carter secured against Matt Serra and Carlos Newton ending Pat Miletich’s reign also turned UFC 31 into one of the most sorted out events in the history of the promotion.