- First winner of the Strikeforce (2006) Welterweight World Title.
- Defeated Jeremy Jackson via Submission at UFC 44. (September 2003)
- Defeated Koji Oishi via KO at UFC 53. (June 2005)
- Defeated Robbie Lawler via KO at UFC 47. (April 2004)
- Defeated Drew Fickett via TKO at UFC 51. (February 2005)
- Debut with Strikeforce (2006) at _"Strikeforce: Diaz vs. Shamrock" (2009)_ to defeat Frank Shamrock by TKO in round 2. (April 2009)
- Both Nick Diaz and his brother Nate are advocates for cannabis.
- 3rd Degree Black Belt in Brazilian Jiu-Jitsu under Cesar Gracie.
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