KSW Vet Krzysztof Glowacki Slapped With 4-Year Ban

Crazy turn of events at #KSWColosseum2 earlier. Krzysztof Glowacki, who has fought Oleksandr Usyk in boxing, made his MMA debut and knocked his opponent out from the bottom of full mount! 🤯pic.twitter.com/qASt2YJV25

— Sherdog (@sherdogdotcom) June 3, 2023

Former World Boxing Organization cruiserweight champ Krzysztof Glowacki, who recently made a sensational mixed martial arts debut for Konfrontacja Sztuk Walki, has been banned for four years.

The ban was handed out by UK Anti-Doping, which oversees anti-doping in the United Kingdom and is compliant with World Anti-Doping Agency protocols. Glowacki (32-4 in boxing) was banned after his urine sample reportedly tested positive for Boldenone, an anabolic androgenic steroid.

Glowacki’s alleged failed test dates back to January 2023, following his fourth-round Technical Knockout loss to Richard Riakporhe in Manchester, England. The Polish standout was initially handed a provisional suspension in April and denied having knowingly taken any prohibited substance. His case was then heard on Oct. 31 by the independent National-Anti-Doping Panel, which arrived at a decision last week.

Glowacki's provisional suspension didn’t stop him from making his MMA debut in June at KSW 83 against Patryk Tolkaczewski. The 37-year-old went on to score a jaw-dropping Round 1 knockout from the bottom position while being fully mounted.

Glowacki won the WBO title against Marco Huck in 2015 and defended it once before losing it to current heavyweight champ Oleksandr Usyk in 2016, which marked his first pro loss in 27 outings.