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Submission Underground 12 took place Sunday, March 29, 2020 with 9 fights in Portland, Oregon.
Craig Jones
Kevin Casey
Ben Egli
Jake Ellenberger
Juan Bernardo
Bobby Emmons
Cris Lencioni
Logan Skinner
Matt Stringham
Joe Levasseur
Alex Larmey
Thomas Patrick
Jake Smith
Gorge Martinez
Don Stoner
Lee Flores
Cody Kenaga
John Simon