UFC Fight Night: Brendan Allen vs. Christian Leroy Duncan Prediction, Betting Odds & 4 Prop Bets

Event: UFC Fight Night: Allen vs. Duncan (UFC Vegas 122) Date: Saturday, October 10, 2026 Prelims: 5:00 PM ET Main Card: 8:00 PM ET Location: Meta APEX — Las Vegas, Nevada Streaming: Paramount+ Main Event Division: Middleweight (185 pounds) Main Event: Brendan Allen vs. Christian Leroy Duncan (5 Rounds)

The UFC returns to Las Vegas on Saturday for an intriguing middleweight showdown between established contender Brendan “All In” Allen and rising British knockout artist Christian Leroy Duncan.

With both fighters riding impressive winning streaks, Saturday’s main event could have significant implications for the UFC middleweight championship picture. Allen wants to strengthen his position among the division’s elite, while Duncan has an opportunity to earn the biggest victory of his career.

The entire event streams live on Paramount+, with preliminary action beginning at 5:00 PM ET and the main card starting at 8:00 PM ET.

Betting Odds

Brendan Allen

27-7 | No. 4 Middleweight

-135

Favorite

Christian Leroy Duncan

15-2 | No. 10 Middleweight

+115

Underdog

Moneyline odds from bet365, October 8, 2026. Other sportsbooks may offer different prices. bet365 News US+1

Allen enters as a modest favorite, reflecting his experience against elite-level opposition and his dangerous submission game.

Duncan represents an interesting underdog because of his explosive striking, four-inch reach advantage and five-fight winning streak.

The betting market suggests a competitive contest rather than a clear mismatch.

Allen vs. Duncan Fight Preview

Brendan Allen enters Saturday’s matchup with a professional record of 27-7, while Christian Leroy Duncan brings a 15-2 record into the biggest opportunity of his UFC career.

Both fighters have legitimate reasons to believe they can emerge victorious, but their approaches to mixed martial arts are dramatically different.

Allen is a versatile middleweight contender who combines aggressive grappling, submission threats, pressure and an increasingly effective striking game.

Duncan is a dynamic kickboxer who thrives on unpredictability, explosive combinations and powerful attacks from multiple angles.

The biggest question is whether Duncan can keep the contest standing long enough to exploit his striking advantages or whether Allen can transform the matchup into the grinding, physical battle he prefers.

Brendan Allen: Experience and Grappling Could Make the Difference

Allen enters the Octagon riding a three-fight winning streak, most recently defeating Edmen Shahbazyan by unanimous decision in June 2026.

That victory followed his notable win over Reinier de Ridder in October 2025, helping establish Allen as one of the division’s leading contenders.

Allen has developed considerably since joining the UFC, evolving from a grappling specialist into a more complete mixed martial artist.

His most dangerous weapon remains his submission game.

Allen is particularly effective when attacking opponents’ backs, establishing positional control and threatening rear-naked chokes.

Unlike fighters who simply hunt takedowns, Allen often uses his striking to create grappling opportunities.

He can pressure opponents toward the cage, force clinch exchanges and exploit defensive mistakes when they attempt to escape.

Against Duncan, that approach could be especially important.

Duncan is extremely dangerous when allowed to establish a comfortable striking rhythm. Allen cannot afford to spend extended periods standing directly in front of the British fighter.

Instead, expect Allen to establish early pressure, attack with combinations and look for opportunities to initiate wrestling exchanges.

Another important factor is his five-round experience.

Allen has already participated in high-pressure UFC main events against experienced middleweight competition. Duncan, by comparison, will be making his first UFC headlining appearance.

If the fight reaches the championship rounds, Allen’s experience and ability to adapt could become decisive.

Christian Leroy Duncan: Explosive Striking and Momentum

Duncan enters Saturday with an impressive 15-2 professional record and five consecutive victories.

The former Cage Warriors middleweight champion has emerged as one of the division’s most exciting rising contenders.

His recent victories include wins over Roman Dolidze and former UFC title challenger Jared Cannonier, demonstrating that he is capable of competing against established names.

Perhaps most importantly, Duncan has developed beyond being simply an explosive knockout artist.

His decision victories over experienced opponents have demonstrated an improving ability to manage distance, pace himself and win competitive rounds.

Duncan’s striking is built around movement, creativity and unusual attacking angles.

He frequently changes rhythm, uses spinning techniques and attacks opponents with explosive combinations that are difficult to anticipate.

His kicking arsenal could be especially important against Allen.

If Duncan can establish kicks to the body and legs, he may be able to slow Allen’s forward pressure and create opportunities to land heavier strikes.

The British contender also possesses a meaningful reach advantage.

Both fighters stand approximately 6-foot-2, but Duncan has a listed 79-inch reach compared with Allen’s 75 inches.

That additional four inches could help Duncan control exchanges at long range.

The challenge is avoiding prolonged grappling situations.

Allen has considerably more experience controlling opponents on the ground, and Duncan cannot afford to surrender his back or spend entire rounds defending submission attempts.

Duncan’s best opportunity likely comes during the opening three rounds, when his explosiveness and unpredictable striking can be most effective.

If he can repeatedly punish Allen’s takedown entries and maintain distance, an upset becomes realistic.

Top 4 Betting Angles

Prop Bet #1: Brendan Allen Moneyline -135

DraftKings

4.5/5

Tip: Brendan Allen Moneyline -135

• UFC Experience
• Submission Advantage
• Five-Round Experience

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Allen represents the strongest overall selection because of his experience, versatility and ability to win fights in multiple ways.

He has faced established middleweight contenders and demonstrated that he can survive difficult moments before making adjustments.

His grappling advantage is particularly important.

If Allen can consistently close distance and secure takedowns, he should have opportunities to control Duncan and accumulate meaningful scoring time.

The moneyline also provides protection against the uncertainty of predicting a specific finishing method.

Prediction: Brendan Allen wins.

Prop Bet #2: Over 3.5 Rounds -125

FanDuel

4.6/5

Tip: Over 3.5 Rounds -125

• Five-Round Main Event
• Allen Durability
• Duncan Decision Victories

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The listed total at bet365 is Over 3.5 rounds -125, indicating that bookmakers see a reasonable possibility of this contest reaching the later stages.

Both fighters have demonstrated that they can perform effectively in longer contests.

Allen’s experience suggests he is comfortable adjusting his strategy as fights progress.

Meanwhile, Duncan has recently shown improved patience and decision-winning ability against high-level opponents.

Although both possess finishing weapons, their respect for each other’s capabilities may produce a more measured opening.

Allen could spend the early rounds attempting to establish wrestling control, while Duncan looks to maintain distance and avoid unnecessary exchanges.

Prediction: The fight reaches Round 4.

Prop Bet #3: Brendan Allen by Submission

Caesars

4.4/5

Tip: Brendan Allen by Submission

• Rear-Naked Choke Threat
• Grappling Advantage
• Ground Control

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Allen by submission is the most appealing method-of-victory selection.

His ability to capitalize on positional mistakes makes him particularly dangerous against opponents who rely heavily on striking.

Duncan has demonstrated improving defensive skills, but Allen presents one of the most complicated grappling challenges of his career.

If Allen can secure takedowns and force Duncan to defend from uncomfortable positions, opportunities for submissions should emerge.

A rear-naked choke is a particularly realistic possibility if Duncan exposes his back while attempting to stand.

The middle rounds could provide Allen with his best opportunity, especially if he succeeds in slowing Duncan through pressure and wrestling.

Prediction: Allen by submission in Round 3 or Round 4.

Prop Bet #4: Christian Leroy Duncan by KO/TKO

BetMGM

4.5/5

Tip: Christian Leroy Duncan by KO/TKO

• Explosive Striking
• Reach Advantage
• Early Finishing Threat

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Duncan by knockout is the most dangerous alternative to an Allen victory.

The British middleweight has recorded 10 knockout victories in 15 professional wins, illustrating his ability to finish opponents when openings appear.

He possesses the movement, creativity and power to punish Allen if the American becomes predictable while entering striking range.

Spinning attacks, straight punches and counterstrikes could all become effective weapons.

If Duncan can keep the fight standing and force Allen into extended exchanges, he could land a fight-changing strike.

His clearest knockout opportunity may come during the first three rounds, before the cumulative effects of wrestling and pressure become significant.

Prediction: Duncan by KO/TKO is the leading upset scenario.

Method-of-victory prices were not independently confirmed for every selection. These are suggested betting markets rather than guaranteed available lines.

Keys to Victory

Brendan Allen

• Establish forward pressure without recklessly rushing into exchanges.
• Use punches and feints to set up takedowns.
• Force Duncan toward the fence.
• Control positions in the clinch and on the ground.
• Attack submissions when Duncan attempts to escape.
• Avoid extended exchanges at Duncan’s preferred kicking range.
• Make the British fighter work defensively throughout all five rounds.

Christian Leroy Duncan

• Establish his four-inch reach advantage.
• Use footwork to maintain distance.
• Attack Allen’s legs and body with kicks.
• Punish predictable takedown attempts with counters.
• Avoid extended clinch exchanges against the fence.
• Defend takedowns and immediately return to striking range.
• Maintain discipline rather than pursuing reckless early knockouts.

Additional Main Card Fights to Watch

The middleweight main event headlines an entertaining lineup featuring established UFC veterans and promising contenders.

Matchup

Division

Prediction

Brendan Allen vs. Christian Leroy Duncan

Middleweight

Allen

Matheus Camilo vs. Jai Herbert

Lightweight

Camilo

Loopy Godinez vs. Ketlen Souza

Women’s Strawweight

Godinez

Andre Fili vs. Kai Kamaka III

Featherweight

Fili

Malcolm Wellmaker vs. Otari Tanzilovi

Bantamweight

Wellmaker

The official UFC lineup also features preliminary matchups involving Julius Walker, Gerald Meerschaert, Niko Price, Leon Shahbazyan and other fighters. The scheduled card remains subject to change.

The Verdict

Prediction: Brendan Allen defeats Christian Leroy Duncan by Submission (Round 4)

Best Bet: Brendan Allen Moneyline -135

Best Supporting Prop: Over 3.5 Rounds -125

Best Method-of-Victory Bet: Brendan Allen by Submission

Alternative: Christian Leroy Duncan by KO/TKO

This matchup has the potential to become one of the more entertaining UFC Fight Night main events of October.

Duncan enters with tremendous momentum and possesses the striking ability to challenge virtually anyone in the middleweight division.

His four-inch reach advantage, unpredictable attacks and knockout power could create serious problems for Allen, particularly in the opening rounds.

However, Allen has several important advantages.

His experience against elite opposition, submission ability and proven capacity to handle demanding contests should allow him to make adjustments as the fight progresses.

Expect Duncan to enjoy success early, using his length and footwork to land combinations while frustrating Allen’s initial takedown attempts.

The second and third rounds could become decisive as Allen begins increasing his pressure and forcing more physical exchanges.

If Allen successfully establishes his grappling game, Duncan may find himself defending takedowns rather than initiating his preferred striking combinations.

That is where Allen’s experience becomes especially important.

Duncan has the talent to win this fight, but Allen’s ability to control where the action takes place gives him a slight advantage.

The most likely scenario is a competitive opening followed by Allen gradually imposing his wrestling and grappling.

By the championship rounds, Duncan could find himself increasingly vulnerable to positional control and submission attacks.

Final Prediction: Brendan Allen defeats Christian Leroy Duncan by fourth-round rear-naked choke submission, extending his winning streak to four fights and strengthening his position in the UFC middleweight title picture.