Welterweight: 156-170 lbs.

Nick Diaz and Joe Hurley compete for the inaugural WEC welterweight championship.
1	Nick Diaz	def.	Joe Hurley	Submission (kimura) @ 1:55 of R1	WEC 6: Return Of A Legend	03.27.03
Nick Diaz vacates the WEC welterweight championship after leaving the promotion to compete for the Ultimate Fighting Championship. Shonie Carter and J.T. Taylor compete for the vacant WEC welterweight championship.
2	Shonie Carter	def.	J.T. Taylor	Decision (unanimous) @ 5:00 of R3	WEC 8: Halloween Fury 2	10.17.03
3	Karo Parisyan	def.	Shonie Carter	Decision (unanimous) @ 5:00 of R3	WEC 10: Bragging Rights	05.21.04
Karo Parisyan vacates the WEC welterweight championship after leaving the promotion to compete for the Ultimate Fighting Championship. Mike Pyle and Brent Bergman compete for the vacant WEC welterweight championship.
4	Mike Pyle	def.	Brent Bergman	Submission (triangle choke) @ 3:36 of R1	WEC 17: Halloween Fury 4	10.14.05
		def.	Shonie Carter	Submission (triangle choke) @ 2:06 of R1	WEC 18: Unfinished Business	01.13.06
Mike Pyle vacates the WEC welterweight championship after leaving the promotion to compete for the International Fight League. Carlos Condit and John Alessio compete for the vacant welterweight championship.
5	Carlos Condit	def.	John Alessio	Submission (rear-naked choke) @ 4:59 of R2	WEC 26: Condit vs. Alessio	03.24.07
		def.	Brock Larson	Submission (armbar) @ 2:21 of R1	WEC 29: Condit vs. Larson	08.05.07
		def.	Carlo Prater	Submission (guillotine choke) @ 3:48 of R1	WEC 32: New Mexico	02.13.08
		def.	Hiromitsu Miura	TKO (punches) @ 4:43 of R4	WEC 35: Condit vs. Miura	08.03.08
World Extreme Cagefighting chooses to disband the WEC welterweight division. World Extreme Cagefighting ceases operations and folds on December 16, 2010 after being purchased by UFC parent company Zuffa and ultimately merged with the Ultimate Fighting Championship.