Marcin Prachnio, a seasoned mixed martial artist, competed with a record of 17 wins, 9 losses, and 0 draws, primarily competing in the 205 lbs weight class. Standing at 6' 3' tall with a reach of 73', he adopts an orthodox stance in the octagon. Throughout his UFC career, Prachnio demonstrated a significant striking rate of 5.52 per minute, landing strikes accurately 54% of the time while absorbing 3.15 strikes per minute. His strike defense also stood at 54%, indicating a resilient approach to combat. In terms of grappling, he averaged 0.14 takedowns per 15 minutes with a 20% success rate and made no submission attempts during the same period. Notable victories in Prachnio's career include Khalil Rountree Jr., an opponent who held an ELO rating of 1016 at the time of their encounter. In his most recent five fights, he won against William Knight via unanimous decision on February 18, 2023, but suffered losses to Vitor Petrino and Modestas Bukauskas via submission (arm triangle) in 2023 and 2024 respectively. His last fight was a loss against Jimmy Crute via submission (armbar) on July 19, 2025.