Chael Sonnen's Wrestling Underground is an amateur wrestling promotion company based on Oregon, United States and ran by Chael Sonnen. The promotion made its debut on August 30, 2020 via UFC Fight Pass.^[1]

Despite the events being held inside an octagon, the rules remain similar to the traditional freestyle and Greco-Roman (which are provided by United World Wrestling), as per stated by the promotion's founder Chael Sonnen^[1] and seen in the first card held.^{[citation needed]}

Wrestling Underground 1
Promotion	Chael Sonnen's Wrestling Underground
Date	August 30, 2020
Venue	Undisclosed
City	Northwestern United States
Attendance	None (behind closed doors)

Chael Sonnen's Wrestling Underground I was an amateur wrestling event that took place on August 30, 2020 at an undisclosed location in the Pacific Northwest. Also the first card in the history of the company, it was aired on UFC Fight Pass.^[1]

Card

Wrestling Underground I
Weight Class					Method	Round	Time	Notes
Heavyweight	FS	Nick Gwiazdowski	def.	Kyven Gadson	TF. 10-0	1	2:41
Catchweight 185 lbs	FS	David McFadden	def.	Tommy Gantt	Dec. 8-4	2	3:00	McFadden replaced Mark Hall on short notice.
Catchweight 213 lbs	FS	Kollin Moore	def.	Deron Winn	Dec. 7-0	2	3:00
Catchweight 190 lbs	FS	Sammy Brooks	def.	Shakur Rasheed	Dec. 8-6	2	3:00
Catchweight 180 lbs	GR	Ben Provisor	def.	RaVaughn Perkins	Dec. 10-9	2	3:00
Catchweight 159 lbs	FS	Tyler Berger	def.	Joey McKenna	Dec. 8-2	2	3:00