Nathan Donald Diaz is an American mixed martial artist and professional boxer who is currently a free agent. Diaz is most known for his time spent fighting in the Ultimate Fighting Championship (UFC) where he fought for over 15 years after winning The Ultimate Fighter 5. Prior to signing with the UFC, Diaz competed in World Extreme Cagefighting, Strikeforce, and Pancrase. Diaz has the third most UFC bonus awards, with 16 in total. In 2012 he challenged for the UFC Lightweight Championship. As his inspirations for fighting, Diaz mentions boxers Mike Tyson and Earnie Shavers and the also controversial MMA fighter Rousimar Palhares. Diaz's older brother Nick is also a professional MMA fighter. Both Diaz brothers are advocates for cannabis and even have a licensed line of marijuana pre-rolls made by California Finest. They currently run a Brazilian jiu-jitsu school in Stockton, California (Nick Diaz Academy) and founded a CBD company called Game Up Nutrition.