As mixed martial artists, Jake Shields and Chris Lytle are known as two of the most fearsome submission artists in the game. At July 17's Submission Underground event, we see whose ground game has the edge, as they face off in a featured submission-only matchup.

Presented by Chael Sonnen, Submission Underground brings the world's best grapplers under one roof in a submission-only format. Two people enter the cage—one taps out. It's that simple. Watch the inaugural event LIVE on FloCombat.com Sunday, July 17: https://goo.gl/aRJiZ8