What the Odds Say
Cody Haddon enters this MMA matchup as a clear favorite across every major sportsbook. At -345 to -385 depending on the book, oddsmakers are pricing Haddon as a significant favorite heading into this May 30 bout. Aori Qileng is listed as the underdog at +275 to +285, with BetOnline.ag offering the best return on Qileng at +285.
Converting those numbers into implied probabilities gives you a cleaner picture of how the market views this fight. Haddon at -345 implies roughly a 77.5% chance of winning. Qileng at +285 implies around a 25.9% win probability. Those numbers add up to more than 100% because of the vig built into the line, but the gap between them is wide. The market is treating this as a lopsided matchup. Use the Odds Converter to quickly flip any of these American odds into decimal or fractional format to compare value across books.
Cody Haddon Odds and Favorite Pricing
Haddon is the unanimous favorite across all six books tracked here, with the consensus sitting right around -345. That number holds at BetOnline.ag, BetUS, Bovada, and Caesars. FanDuel stands out on the high end at -385, implying roughly a 79.4% win probability. DraftKings has him at -357, slightly above the consensus but below FanDuel.
For bettors looking to back Haddon, book selection matters. The difference between -345 at Bovada or Caesars and -385 at FanDuel is meaningful, especially at larger bet sizes. Shopping the best number is basic line value management, and the spread across these six books makes it worth a check before placing a bet.
Aori Qileng Underdog Value
Qileng's odds range from +275 at Bovada and Caesars to +285 at BetOnline.ag. On a $100 bet, the gap between +275 and +285 is $10 in payout. On larger bets or across multiple plays, those edges accumulate.
BetOnline.ag is the current best price on Qileng at +285, followed by DraftKings and FanDuel at +280. Bettors interested in the underdog side should lock in the best available number rather than defaulting to a single book.
At +285, the implied probability on Qileng sits at approximately 25.9%. If you believe his true win probability is higher than that, there is a case for positive expected value. The EV Calculator can help you run that math if you have a specific probability estimate in mind.
Line Differences Worth Noting
The biggest gap in this market is on the favorite side. FanDuel has Haddon at -385, a full 40 cents higher than the -345 consensus at multiple books. That discrepancy could reflect early sharp action, a different in-house model, or where FanDuel's current liability sits.
On the underdog side, the range is tighter. The 10-cent spread from +275 to +285 across six books suggests the market is reasonably settled on Qileng's probability, even as the favorite pricing shows some variance.
If FanDuel's line tightens toward -345 in the coming days, it likely signals money coming in on Haddon there. If other books start moving toward -385, it may indicate the market is repricing Haddon upward across the board.
What to Watch Before Fight Night
A few factors are worth monitoring as this fight approaches on May 30.
Line movement. The gap between FanDuel's -385 and the -345 consensus is the most important thing to track. Significant movement in either direction could signal new information entering the market.
Injury or withdrawal news. MMA lines can shift quickly with any news out of camp. A weight cut issue, a training injury, or a change in fight preparation can reprice a line fast. Staying current on both fighters' camp updates is valuable heading into fight week.
Handle and ticket splits. When one side draws heavy public money and the line holds steady, it can indicate sharper action sitting on the other side. Tracking how the line behaves under public load gives you context about where books feel comfortable.
For current odds across all MMA matchups in one place, the UFC odds page on Line Whale keeps lines updated as books adjust.