Sean O’Malley doesn’t agree with the betting odds for his upcoming fight against Petr Yan. According to Tipico Sportsbook, O’Malley (15-1 MMA, 7-1 UFC) is a +280 underdog heading into his bout with former bantamweight champion Yan (16-3 MMA, 8-2 UFC) at UFC 280 on Oct. 22 in Abu Dhabi. Yan marks a big step up in competition for O’Malley, but the 27-year-old thinks being nearly a 3-1 underdog is not an accurate reflection of how he sees the matchup playing out. “I think if you asked the smartest guys, the best fighters in the world, ‘What do you guys…