COSTA MESA, Calif. – Marvin Vettori isn’t sure Paulo Costa makes 186 pounds against Luke Rockhold at UFC 278. That’s because Vettori (18-5-1 MMA, 8-3-1 UFC) has first-hand experience. Vettori fought Costa last October in the UFC Fight Night 196 main event, but the matchup was moved to light heavyweight after Costa had trouble hitting the middleweight mark. Vettori won by unanimous decision . Although UFC president Dana White said Costa (13-2 MMA, 5-2 UFC) must now move up to 205, the former title challenger has decided to remain at middleweight, but Vettori doesn’t think he makes weight
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