UFC legend Andrei Arlovski scores knockout in his professional boxing debut

It’s been over two decades since he won the UFC heavyweight championship, but Andrei Arlovski is still going strong and has a very good 2025.

After racking up finishes in the Dirty Boxing Championship and then bare-knuckle finishes under the BKFC banner earlier this year, Arlovski, 46, notched his third victory of 2025 under the Misfits Boxing banner on Sunday.

Teaming up with social media celeb Kelechi “Kelz” Dyke, who was just a kid when Arlovski claimed UFC gold, the heavyweight got the job done in the fourth and final round. “The Pitbull flattens Kelz in the last round! Andrei Arlovski still has dynamite power,” was the call in the DAZN broadcast.

A deadly right hand dropped Kelz, leaving no doubt about the winner. Kelz, a 27-year-old, 6-foot-2 man, was 1-1 as a boxer prior to the Misfits Duel: Cracra vs Fox card in Nashville, Tennessee.

46-year-old Andrei Arlovski scores the KO in his boxing debut 👏 @MisfitsBoxing (via @DAZNBoxing) pic.twitter.com/wD1DDlGpNU

— Uncrowned (@uncrownedcombat) November 9, 2025

Andrei Arlovski defeated Tim Sylvia in February 2005 to claim an interim heavyweight title in the UFC, defended it, was promoted to undisputed champion, and then defended that title in October. He would eventually lose the title, mostly to Sylvia, and eventually leave the UFC to fight Fedor Emelianenko – the start of a rocky four-fight skid.

After turning things around, he returned to the UFC in 2014 and was a staple in the heavyweight division until last year, when he was snapped again from a four-fight skid.

However, at 46 years old, Arlovski clearly remains dangerous.