Megan Olivi interviews Ilia Topuria backstage at UFC 298 after he knocked out Alexander Volkanovski to become the new featherweight champion. #UFC298 #Topuria #UFC ✔ For more UFC, sign up for ESPN+ http://espnplus.com/ufc/youtube ✔ Get the ESPN App: http://www.espn.com/espn/apps/espn ✔…