Top bantamweight contender Sean O’Malley was watching the UFC 287 pay-per-view along with millions of fans worldwide on Saturday. He witnessed Israel Adesanya win the middleweight championship back by viciously knocking out Alex Pereira . O’Malley posted his live reaction to the UFC 287 main event to his YouTube channel. “The greatest middleweight of all time,” said O’Malley after Adesanya’s performance.