Colby Covington, who loves to play the heel, has ripped into former UFC middleweight champion Khamzat Chimaev’s mentality. According to Covington’s assessment, Chimaev struggles when things don’t go his way and has difficulty dealing with adversity. Covington believes this “quitter” mindset was evident at UFC 328 when Chimaev pulled guard twice in the second round of his title bout with Sean Strickland. On The Ariel Helwani Show, “Chaos” said: “…