“Don’t mess with Matt because he can kick your a$$” 🥋👊🏻💥 You know Matt McCall as bradkeselowski’s crew chief, but did you know he has a black belt in American Freestyle Karate? 🥋 He joined us for this week’s episode of #BackstretchBanter on the one and only siriusxmnascar! Catch the full episode live on air at 2PM ET today. Full episode uploaded to our YouTube channel this afternoon. . LINK IN BIO.