Erosa Knocks Out Lee, Retires in Vegas

Julian Erosa ended his MMA career with a first-round knockout of JeongYeong Lee at UFC Vegas 123.

Updated on Nov. 1, 2026 in Mixed Martial Arts

Julian Erosa knocked out JeongYeong Lee in 91 seconds at UFC Vegas 123 at the Meta Apex in Las Vegas. Erosa announced his retirement on social media before the bout, and the win closed his MMA career.

Why it matters

The finish closes a career that began in October 2010 and leaves Erosa with a 32-14 overall MMA record and a 10-9 UFC record. The knockout was his quickest since February 20, 2021 and the second-fastest of his 19 UFC fights.

The 91-second finish was Erosa's quickest since February 20, 2021 and the fourth-fastest of his MMA career, with a final record of 32-14 overall and 10-9 in the UFC. It is not known whether Erosa's retirement will be permanent.

The players

Julian Erosa

Erosa is a veteran mixed martial artist who fought 19 times in the UFC and compiled an overall MMA record of 32-14.

JeongYeong Lee

Lee is a South Korean mixed martial artist who lost to Erosa by first-round knockout at UFC Vegas 123.

The details

Erosa, 37, landed a first-round knockout against JeongYeong Lee on Saturday evening at the Meta Apex. He had announced his retirement on social media before stepping into the cage.

October 2010: Erosa made his MMA debut at CageSport 12 at Emerald Queen Casino in Tacoma.
February 20, 2021: Erosa's previous quickest knockout.
October 31, 2026: Erosa knocked out Lee at UFC Vegas 123.

Season Trajectory

The win caps a career spanning 46 MMA bouts, with Erosa's 10-9 UFC record and 32-14 overall mark defining his time at the top level. The finish marks a retirement from a fighter whose quickest knockouts came in 2021 and in his earlier career.

The result removes Erosa from future UFC cards and leaves a 10-9 UFC record on his résumé. For fans tracking fighter careers, the finish is a final data point on a 19-fight UFC run.