Allen vs. Duncan UFC Fight Night 290: Odds, picks and expert predictions

Saturday night in Las Vegas, two middleweight fighters will step into the octagon at UFC Fight Night 290 with sharply different momentum and contrasting physical tools. Brendan Allen arrives at the Meta Apex with three straight wins, most recently a unanimous decision over Edmen Shahbazyan in June. Christian Leroy Duncan comes in hotter still—five consecutive victories, including a July decision over Jared Cannonier. The bout is scheduled for five rounds, with prelims starting at 5 p.m. ET and the main card at 8 p.m. ET on Paramount+.

Allen's record stands at 27-7, while Duncan sits at 15-2. On paper, Allen carries more experience and more total wins, but Duncan's recent form is undeniable. Over his past six fights, Duncan has won five, with three of those victories going to the judges and two coming by knockout or technical knockout. Allen, meanwhile, has won three of his last six, though he has shown a tendency to go the distance—five of his past six bouts have reached a decision. His only finish in that span came in October 2025, when he knocked out Reinier de Ridder in the fourth round of a Fight Night main event.

The physical matchup tilts in Duncan's favor in some measurable ways. Both men stand 6-foot-2, but Duncan possesses a 4-inch reach advantage, a significant edge in a sport where distance control often determines the flow of a fight. Duncan also lands more significant strikes per minute—4.45 compared to Allen's 3.75—and does so with greater accuracy, connecting on 63.95 percent of his significant strikes versus Allen's 58.87 percent. Allen's strength lies on the ground. He averages 1.52 takedowns per fight with a 41.07 percent success rate, and he has averaged 1.06 submission attempts per outing, giving him multiple paths to victory if he can drag the fight to the canvas.

The betting market reflects how evenly matched these two are perceived to be. Allen sits at -115 on the moneyline, meaning a bettor would need to risk $115 to win $100. Duncan is at -105, requiring $105 to win $100. The line is essentially a coin flip. Expert analysis, however, leans toward Duncan. The reasoning centers on his reach advantage and his ability to control distance. If Duncan can keep Allen at bay, maintain an upright posture, and avoid extended periods on his back, he should be able to outpoint Allen over five rounds. Duncan's recent reliance on decisions—winning four of his last six fights by judges' scorecards—suggests he is comfortable in a grinding, technical battle.

The over-under on rounds is set at 3.5, with over at -120 and under at -110. Experts are backing the fight to go the distance at +130 odds, a contrarian play given that both fighters are capable of finishing opponents. Allen has the submission threat and has shown knockout power. Duncan has two finishes in his current win streak. Yet the data supports distance: Allen has reached a decision in five of his last six fights, and Duncan has needed the judges in four of his last six. One betting angle gaining traction is Duncan by decision or technical decision at +450 odds, offering a 4.5-to-1 return if Duncan wins without a finish. The logic is straightforward—if Duncan's reach keeps Allen honest and his striking accuracy wears down his opponent over time, a decision victory becomes the most likely outcome.

What unfolds Saturday will depend largely on whether Allen can close the distance and impose his wrestling early, or whether Duncan can establish his jab, use his length, and force Allen to chase him around the octagon. Allen's path to victory runs through the takedown; Duncan's runs through keeping the fight standing and making Allen miss.