Lightweight: 146-155 lbs.

John Mahlow and Eben Oroz compete for the inaugural XFC lightweight championship.
1	John Mahlow	def.	Eben Oroz	Decision (unanimous) @ 5:00 of R3	XFC 4: Judgment In The Cage	06.28.08
		def.	Luiz Palomino	Submission (rear-naked choke) @ 1:57 of R5	XFC 6: Clash Of The Continents	12.05.08
2	Junior Assuncao	def.	John Mahlow	Submission (guillotine choke) @ 4:02 of R1	XFC 10: Night Of Champions	03.19.10
Junior Assuncao vacates the XFC lightweight championship after leaving the promotion to compete for the Ultimate Fighting Championship. Nick Newell and Eric Reynolds compete for the vacant XFC lightweight championship.
3	Nick Newell	def.	Eric Reynolds	Submission (rear-naked choke) @ 1:22 of R1	XFC 21: Night Of Champions 2	12.07.12
Nick Newell is stripped of the XFC lightweight championship after refusing to defend against Scott Holtzman. Scott Holtzman and John Mahlow compete for the vacant XFC lightweight championship.
4	Scott Holtzman	def.	John Mahlow	TKO (punches) @ 2:53 of R2	XFC 24: Collision Course	06.14.13
		def.	Roger Carroll	Decision (unanimous) @ 5:00 of R5	XFC 26: Night Of Champions 3	10.18.13
Scott Holtzman vacates the XFC lightweight championship after leaving the promotion to compete for the Ultimate Fighting Championship. Contenders are never determined to compete for the vacant XFC lightweight championship. Xtreme Fighting Championships ceases operations and folds by the end of the 2016 calendar year.