What the Odds Say
Brendan Allen enters this middleweight matchup as the consensus favorite across all six books carrying lines on this fight, but the margin varies enough to make shopping worthwhile. Allen is priced between -139 and -196 depending on the book, while Christian Leroy Duncan checks in as a plus-money underdog ranging from +113 to +138. That spread is worth paying attention to before you place anything.
At the tightest line, BetOnline.ag has Allen at -143 and Duncan at +122. At the widest, Betclic has Allen at -196 and Duncan at +138. That gap tells you the market has not fully settled on how dangerous Duncan is in this one.
Implied Probabilities: Allen vs. Duncan
Converting these moneylines into implied win probabilities gives you a clearer picture of what the books actually think. Use Line Whale's Odds Converter to run any line quickly.
Brendan Allen implied win probability:
- 1xBet (-139): ~58.2%
- BetOnline.ag (-143): ~58.9%
- DraftKings (-143): ~58.9%
- Novig (-159): ~61.4%
- Winamax (-185): ~64.9%
- Betclic (-196): ~66.2%
Christian Leroy Duncan implied win probability:
- Novig (+113): ~46.9%
- DraftKings (+120): ~45.5%
- BetOnline.ag (+122): ~45.0%
- 1xBet (+121): ~45.2%
- Winamax (+125): ~44.4%
- Betclic (+138): ~42.0%
The consensus puts Allen in the 59-62% range at most major books. Betclic and Winamax are clear outliers, pricing him as a considerably bigger favorite. If you believe BetOnline or DraftKings is closer to fair value, Betclic and Winamax are offering weaker value on Allen and better value on Duncan.
The Line Gap: Where the Opportunity Lives
The spread between the shortest Allen line (-139 at 1xBet) and the longest (-196 at Betclic) is one of the wider discrepancies you will see on a single fight. This is exactly the situation where line shopping earns its keep.
For Duncan backers, Betclic's +138 is a full 25 points better than the +113 at Novig. On a $100 bet, that is the difference between winning $113 and winning $138. Finding the best number consistently is one of the most reliable edges available to recreational bettors.
One additional note: 1xBet is the only book posting a draw line, set at +3200. Draws are rare in MMA, and that number reflects it, but the option exists for bettors who play long shots.
Key Factors to Watch Before This Fight
Allen's Grappling Pedigree
Brendan Allen has built a reputation as one of the better grapplers in the UFC middleweight division. His submission game is a legitimate finishing threat, and books pricing him as a favorite are largely pricing in his ability to control where the fight takes place. If this ends up on the mat, Allen's edge is clearer.
Duncan's Striking and Movement
Christian Leroy Duncan brings a different dimension to this fight. His striking output and movement have made him competitive against quality opposition. Bettors backing him at plus money are betting on his ability to keep this standing and use his athleticism to create problems. How Allen's cardio holds up in the later rounds could matter if Duncan is able to extend this.
Line Movement Between Now and Fight Night
These lines are still early, and significant money on either side, public betting percentages, or any camp news could shift the numbers before October 10. Novig already has Allen at -159, which may signal sharper early money on his side. Tracking how these lines move can tell you whether the market is gaining or losing confidence in the favorite as fight night approaches.
Line Whale's Steam Moves tool tracks significant line movement across books in real time.
Shopping This Line Before October 10
The fight goes Saturday, October 10, with a start time of 5:00 PM PDT. With more than a week on the clock, bettors have time to monitor whether these lines converge or continue to diverge. The current spread between Betclic and BetOnline is large enough that comparing before committing is a must if you have access to multiple books.
For Duncan backers, Betclic's +138 is the best number available right now. For Allen backers, BetOnline.ag and DraftKings at -143 offer the shortest price among the books listed here. Whatever side you land on, the difference between the best and worst available number on this fight is too large to ignore.