Islam Makhachev defends his Lightweight title in a rematch against Alexander Volkanovski. In the co-main event, Khamzat Chimaev and Kamaru Usman look to secure a top ranking in the Middlewei... Read allIslam Makhachev defends his Lightweight title in a rematch against Alexander Volkanovski. In the co-main event, Khamzat Chimaev and Kamaru Usman look to secure a top ranking in the Middleweight division.Islam Makhachev defends his Lightweight title in a rematch against Alexander Volkanovski. In the co-main event, Khamzat Chimaev and Kamaru Usman look to secure a top ranking in the Middleweight division.