Former two-division UFC champion Conor McGregor trashed the proposed champ vs. champ matchup between Islam Makhachev and Alexander Volkanovski . After Islam Makhachev submitted Charles Oliveira in the UFC 280 main event on Saturday, he called out the featherweight champion. Volkanovski entered the octagon and accepted the challenge. Volkanovski served as the backup for the lightweight championship bout, weighing in during the official weigh-in.
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