Brendan Allen’s grappling threat meets Christian Leroy Duncan’s cleaner striking in UFC Vegas 122

Allen’s career rates describe a fighter willing to connect phases. He lands 3.75 significant strikes per minute, completes 1.52 takedowns per 15 minutes and attempts 1.1 submissions over the same period. Across 19 bouts with round data, he has accumulated 22 takedowns, 66 control minutes and 15 submission attempts in 48 rounds.

That submission activity separates the two profiles. Eight of Allen’s 16 archived wins came by submission, with another two by knockout or TKO and six by decision. His 63% finishing rate on those 16 wins has a meaningful base, but the composition matters more than the headline percentage: grappling accounts for most of his finishes.

Duncan has attempted no submissions across 23 tracked rounds and averages only 0.43 takedowns per 15 minutes. His offense is not built around answering grappling with grappling. Allen therefore has an identifiable way to change the terms of the fight if he can get through Duncan’s range and establish repeat entries.

The resistance is real. Duncan owns 57% takedown defense, exactly matching Allen’s own defensive rate, while Allen completes 41% of his career attempts. This is not a matchup in which the raw numbers support assuming automatic control. Failed shots could leave Allen working from extended range against the more accurate striker, consuming energy without producing scoring control.

For bettors, that mechanism touches Allen’s moneyline, submission method, takedown and control-related markets. It also argues for caution on an Allen submission ticket: Duncan has never been finished in his 10 archived bouts, and no verified method or takedown prices were included in the available market snapshot.

Duncan owns the range and efficiency advantages

Both men stand 6-foot-2, but Duncan has a 79-inch reach, four inches longer than Allen’s. He also leads the major striking rates: 4.45 significant strikes landed per minute at 57% career accuracy, compared with Allen’s 3.75 at 52%. Duncan absorbs 2.36 significant strikes per minute and carries 54% striking defense; Allen absorbs 3.78 and has 47% defense.

Those gaps show how Duncan can win minutes. If he maintains separation, forces Allen to reset after failed entries and keeps the exchanges at kickboxing range, he can create a cleaner landed-to-absorbed profile. His target distribution also broadens that route. Of Duncan’s 469 tracked significant strikes, 158 have landed to the legs, compared with 232 to the head and 79 to the body. Allen has landed 549 of his 834 tracked significant strikes to the head, with 172 to the body and 113 to the legs.

Duncan’s leg work matters because Allen needs stable entries to access his best phase. Damage or disruption at long range could reduce the frequency and quality of those attempts. It also gives Duncan a scoring tool that does not require prolonged pocket exchanges.

The counterargument is that Duncan’s striking numbers come from 10 bouts and 23 tracked rounds, compared with Allen’s 19 bouts and 48 rounds. Duncan has also recorded three knockdowns, the same total as Allen despite the smaller sample, but his last two wins both went to decision. His recent results show he can bank rounds; they do not establish how his efficiency will hold over a scheduled five-round fight against a persistent submission threat.

That uncertainty affects significant-strike props, Duncan by decision and the fight-goes-the-distance market. Duncan’s efficiency supports his ability to win striking minutes, but Allen’s grappling can suppress exchange volume even without producing a finish.

Five rounds widen the range of outcomes

The five-round booking creates two competing betting stories. Allen has the more relevant recent evidence beyond three rounds: he stopped de Ridder in Round 4. Duncan’s 10-bout archive contains 23 tracked rounds, and each of his two latest wins ended in a three-round unanimous decision. The packet does not establish how he performs in championship rounds.

That does not automatically favor Allen. He must spend energy closing a four-inch reach gap and attempting takedowns against 57% defense. Duncan, meanwhile, may have to defend more sustained grappling pressure than his zero submission attempts and low takedown rate usually create in his own fights. Neither side’s career averages answer how that interaction changes in Rounds 4 and 5.

The finishing records also pull in opposite directions. Allen and Duncan each have a 63% finish rate on archived wins, but those figures come from different samples: 16 wins for Allen and eight for Duncan. Allen has been finished twice across 20 archived bouts; Duncan has not been finished across 10. Meanwhile, six of Allen’s archived wins and three of Duncan’s have come by decision.

The defensible betting conclusion is conditional rather than directional. Allen’s method props become more interesting only if the price adequately accounts for Duncan’s unbroken finish record and takedown defense. Duncan decision or distance-based positions depend on his ability to deny enough entries to preserve striking volume. Overs depend on both men’s recent decision form, but Allen’s submission history and proven fourth-round finish prevent treating duration as a simple default.

The moneyline is tight, and price shopping matters

The verified moneyline snapshot showed Allen between -120 and -134, while Duncan ranged from +100 to +110. DraftKings listed Allen at -125 and Duncan at +105; FanDuel had the widest quoted split at -134 and +110. BetOnline, BetUS and BetMGM each offered Allen at -120, with Duncan ranging from even money to +103 at those books.

That market treats Allen as a modest favorite rather than pricing the six-place ranking difference as decisive. Mechanically, that makes sense: Allen has the deeper submission game and more extensive tracked sample, but Duncan owns the reach and striking-efficiency advantages while entering on five consecutive wins.

There is no stand-alone bet supported solely by the available prices. Allen backers should prefer the -120 quotes over laying -134 for the same outcome. Duncan backers can find +110 rather than accepting even money. Beyond that execution point, the key handicapping question is whether Allen can turn range-closing attempts into sustained control. If he cannot, Duncan’s accuracy, defense and four-inch reach advantage give him the cleaner route to winning rounds. If he can, Duncan enters a phase in which Allen has produced 15 submission attempts and eight archived submission wins while Duncan has shown no offensive submission game of his own.