Chael Sonnen has one mission with Submission Underground: Make grappling great again. br br Featuring some of the world's top grapplers—Jake Shields, Chris Lytle, Nathan Orchard, Filipe Braga Costa, Ricco Rodriguez, Fabiano Scherner, and more—Submission Underground invades Portland, Ore., July 17. Watch it live on FloCombat.com at 3 p.m.