claim: Nate Diaz declined to ever compete in World Extreme Cagefighting.
evidence: Nathan Donald `` Nate '' Diaz -LRB- born April 16 , 1985 -RRB- is an American professional mixed martial artist currently competing for the Ultimate Fighting Championship -LRB- UFC -RRB- .. mixed martial artist. mixed martial arts. Ultimate Fighting Championship. Ultimate Fighting Championship. He was the winner of The Ultimate Fighter 5 .. The Ultimate Fighter 5. The Ultimate Fighter 5. Diaz is the younger brother of former Strikeforce Welterweight Champion and WEC Welterweight Champion , Nick Diaz .. Welterweight. Welterweight ( MMA ). Nick Diaz. Nick Diaz. Strikeforce Welterweight Champion. List of Strikeforce champions#Welterweight Championship. WEC Welterweight Champion. World Extreme Cagefighting#Welterweight Championship. Strikeforce. Strikeforce ( mixed martial arts ). Prior to signing with the UFC , Diaz competed in World Extreme Cagefighting , Strikeforce , and Pancrase .. World Extreme Cagefighting. World Extreme Cagefighting. Strikeforce. Strikeforce ( mixed martial arts ). Pancrase. Pancrase. As of 7 November 2016 , Diaz is # 5 in official UFC lightweight rankings .. Diaz is also tied with Joe Lauzon for the most UFC bonus awards , with 15 in total .. Joe Lauzon. Joe Lauzon