Khamzat Chimaev congratulates Gilbert Burns on a valiant effort Saturday during UFC 273 at VyStar Veterans Memorial Arena. / Corey Perrine/Florida Times-Union / USA TODAY NETWORK At 8-0 in the ...

Chimaev's majority decision win against Kamaru Usman outlined stamina issues. His Fight of the Night against Gilbert Burns suggested vulnerabilities in brawls. The champ believes he can exploit ...