Brendan Allen Fought Staph Infection to Beat Duncan

Brendan Allen submitted Christian Leroy Duncan in the fifth round of their UFC Vegas 122 main event while fighting through an active staph infection, according to his teammate and former UFC welterweight champion Belal Muhammad.

Muhammad said Allen had been dealing with the infection since Tuesday of fight week, forcing him onto antibiotics with five days still left in the course of treatment by the time he walked out for the main event. "What people don't know is Brendan was dealing with a staph infection since Tuesday of fight week," Muhammad wrote. "Had to get on antibiotics, still has 5 days left on them, and despite all that adversity, went out there and got the finish." Muhammad described the infection as a hole in Allen's back and shared video of Allen walking stiff legged, along with a photo from a hospital emergency check-in during fight week.

Allen needed every bit of that toughness. Duncan came into the Meta Apex off serious momentum and pushed the pace across a back-and-forth main event before Allen locked in a rear naked choke at 22 minutes and 46 seconds into the fight to get the finish.

What Belal Muhammad Said About Brendan Allen's Condition

Muhammad made clear this was not a minor bug Allen played through on fight night. "Never complained, never made excuses, just found a way to win," Muhammad said. "That's the heart of a champion. Proud of my brother." Staph infections are notorious for draining energy and strength well before a fighter even factors in the side effects of antibiotics, which makes a 22-minute, five-round output against a surging opponent a lot harder to write off as a normal performance.

Why This Changes the Read on Brendan Allen's Performance

Anyone who watched Duncan push Allen through the championship rounds now has real context for it. A fighter managing an active infection and a fresh antibiotic regimen is not operating at full output, and that typically shows up late in fights as fatigue, slower recovery between exchanges and a dip in power. Allen still found the finish anyway, which says more about his conditioning base and finishing instincts than a clean scorecard ever could.

For bettors, this is the detail that should shift how Allen gets valued going forward. A middleweight who can grind through a tough, surging opponent and still land a fight-ending submission while physically compromised is a tougher stylistic matchup than Saturday's output alone suggests on paper. Anyone pricing Allen's next line would be wise to treat this win as closer to a worst-case physical scenario than a true measuring stick, which could make him undervalued if books lean too heavily on the Duncan tape.

Frequently Asked Questions

Did Brendan Allen have a staph infection when he fought Christian Leroy Duncan?

Yes, Belal Muhammad revealed that Brendan Allen was dealing with an active staph infection starting Tuesday of fight week before his UFC Vegas 122 main event against Christian Leroy Duncan.

How did Brendan Allen beat Christian Leroy Duncan at UFC Vegas 122?

Brendan Allen submitted Christian Leroy Duncan with a rear naked choke in the fifth round at 22 minutes and 46 seconds of their UFC Vegas 122 main event in Las Vegas.

Who is Belal Muhammad and why did he talk about Brendan Allen's health?

Belal Muhammad is a former UFC welterweight champion and Brendan Allen's teammate who revealed details of Allen's staph infection and fight week hospital visit after the win.