Islam Makhachev TAMPA, Fla. – Saturday’s UFC on FOX 19 card continues to be a little bit cursed. Just three days after the co-main event between Lyoto Machida and Dan Henderson was canceled when Machida admitted to using a banned substance pre-fight, another fight has been scrapped from the event during fight week. The lightweight bout between Drew Dober (16-7 MMA, 2-3 UFC) and Islam Makhachev (12-1 MMA, 1-1 UFC), slated for the opening preliminary-card fight on FOX, is off due to a positive pre-fight drug test for Makhachev.