Newly crowned UFC interim welterweight champion Colby Covington has entered a heated exchange with BJJ phenom Garry Tonon over the internet. Now Tonon has fired back with a brutal response. Covington seemingly fired the first shot when the fighter appeared on the MMA Roasted podcast and claimed he could submit Tonon, a five time Eddie Bravo Invitational champion, in a grappling competition. Taking to Instagram, Tonon has since fired back with a pair of retorts. Check them out below: "Yesterday on MMA roasted @colbycovmma said he could beat me in a grappling match. Let's see it happen, I only have one condition, Colby's mama has to be there to wipe up the drool after ya boy gets SLEPT!" https://www.instagram.com/p/BkDTdOeFkII/?utm_sourceig_embed "If I have the balls to call someone out, say they suck, and that I will submit them publicly, I'll have the balls to prove it. @ColbyCovMMA does not, he's a quivering infant who hides behind his words. He talks about being a great American, what's so great about being a coward?" https://twitter.com/Garry_Tonon/status/1008409500230012928 For more MMA news click here.