1. Oskar Piechota made his professional debut on March 5,2011 at Ring XF3, facing Patryk Kania, and won his first professional submission via a triangle choke.

1. Oskar Piechota made his professional debut on March 5,2011 at Ring XF3, facing Patryk Kania, and won his first professional submission via a triangle choke.
Oskar Piechota made his promotional debut on October 21,2017 at UFC Fight Night: Cerrone vs Till against Jonathan Wilson.
Oskar Piechota won the fight via a knockout in round one.
Oskar Piechota lost the fight via a rear-naked choke in round two.
Oskar Piechota faced Rodolfo Vieira on August 10,2019 at UFC on ESPN+ 14.
Oskar Piechota lost the fight via a submission in round two.
Oskar Piechota faced Punahele Soriano on December 14,2019 at UFC 245.
Oskar Piechota lost the fight via knockout in the first round.
Oskar Piechota faced Marc-Andre Barriault on June 20,2020 at UFC on ESPN: Blaydes vs Volkov.
Oskar Piechota lost the fight via technical knockout in round two.
Oskar Piechota received a 22-month suspension after testing positive for growth hormone-releasing peptide 2 and GHRP-2 free acid, a metabolite of GHRP-2 in a sample collected on September 25,2020.
Oskar Piechota is eligible to return to competition on July 25,2022.