
Nickolas Robert Diaz (born August 2, 1983) is an American professional mixed martial artist who competes in the middleweight division of the Ultimate Fighting Championship (UFC). Diaz is a former Strikeforce, WEC and IFC welterweight champion and a UFC title challenger. He also notably competed in PRIDE, EliteXC, DREAM, and Shooto. Nick is the older brother of fellow UFC fighter Nate Diaz, with the pair of brothers being one of the biggest influences in the sport of MMA.
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Darkness of Man
2025 · as Bo

UFC 51: Super Saturday
2005 · as Self

EliteXC: Uprising
2007 · as Self

UFC 44: Undisputed
2003 · as Self

UFC 183: Silva vs. Diaz
2015 · as Self

UFC 47: It's On!
2004 · as Self

UFC 158: St-Pierre vs. Diaz
2013 · as Self

UFC 137: Penn vs. Diaz
2011 · as Self

UFC 266: Volkanovski vs. Ortega
2021 · as Self

UFC 65: Bad Intentions
2006 · as Self

Pride 33: The Second Coming
2007 · as Self

UFC 62: Liddell vs. Sobral
2006 · as Self

UFC 49: Unfinished Business
2004 · as Self

I Am the Future: A Conor McGregor Film
2016 · as Self

UFC 59: Reality Check
2006 · as Self

Strikeforce: Diaz vs. Daley
2011 · as Self

UFC 143: Diaz vs. Condit
2012 · as Self

Strikeforce: Lawler vs. Shields
2009 · as Self