Iwo Baraniewski

Overview

Three UFC wins, three first-round knockouts, and the longest any of them lasted was 1:29. Then came a fight that went the distance and ended on the scorecards.

Iwo Baraniewski, "Rudy," is a Light Heavyweight from Warsaw, Poland, fighting out of Aligatores Fight Club. He holds a 3-1 UFC record and a 9-1-0 professional record across all promotions. His 2025 appearance on Dana White's Contender Series was a first-round knockout too.

He is the finisher who found out what a third round feels like.

UFC Career

Baraniewski's first pro stage in this data was Dana White's Contender Series, where he stopped Mahamed Aly at 0:20 of round 1. That fight sits outside his UFC record.

His UFC debut came at UFC 323, a first-round TKO of Ibo Aslan at 1:29. Next was Austen Lane at UFC Fight Night: Evloev vs Murphy, finished in 28 seconds. He closed out the run with Junior Tafa at UFC Fight Night: Muhammad vs Bonfim, another round 1 TKO at 1:25.

That made three UFC wins totaling under three and a half minutes of fight time.

The step up came at UFC 331, against Alonzo Menifield, an opponent our model rates as strong. It went all three rounds and Baraniewski lost a split decision. He carries that one-fight losing streak into his next bout.

It's a small sample, but it is the first time we see what he looks like when the early knockout doesn't come.

Fighting Style

Baraniewski is a busy, accurate striker who lands at a high rate and connects cleanly. He is also hard to hit cleanly, though he still absorbs more strikes than most, so his fights tend to be exchanges.

He rarely shoots for takedowns and doesn't hunt submissions. What he does well on the mat side is keep the fight standing, as he is very hard to take down.

All three of his UFC wins ended by KO/TKO in the first round, and he has not yet won a fight that went the distance.

Notable Wins

• Ibo Aslan — KO/TKO, round 1 (1:29), UFC 323 (2025)
• Junior Tafa — KO/TKO, round 1 (1:25), UFC Fight Night: Muhammad vs Bonfim (2026)
• Austen Lane — KO/TKO, round 1 (0:28), UFC Fight Night: Evloev vs Murphy (2026)

Quick Facts

• Division: Light Heavyweight
• UFC record: 3-1
• Professional record (all promotions): 9-1-0
• UFC debut: 2025
• Stance: Orthodox
• Height / Reach: 6'1" / 73.5"
• Team: Aligatores Fight Club
• Born: Warsaw, Poland