UFC Hall of Famer Michael Bisping wonders. “Is Charles Oliveira , in fact, the greatest lightweight of all time?” Bisping said on his YouTube channel . “Because he might just be. It all depends on what happens in Abu Dhabi.” At UFC 280 , former 155-pound champion Oliveira will meet Islam Makhachev for the vacant title he never lost – at least not inside the octagon. Oliveira was stripped of the belt this past May prior to his scheduled UFC 274 title defense against Justin Gaethje after he weighed in at 155.5 pounds under a cloud of controversy over the scale’s accuracy
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