Khamzat Chimaev won the UFC middleweight title on Saturday to extend his undefeated record to 15-0, but Joe Rogan doesn’t consider him unbeatable. Despite many already believing him to be one of the best in the sport, ‘Borz’ has now established himself as a true pound-for-pound standout. The 31-year-old showcased dominant grappling against former champion Dricus Du Plessis in the UFC 319 curtain closer on August 16.