Marcin Prachnio has nine losses against nine opponents on his MMA record. For a list of Prachnio's best fights, refer to "Best fights of Marcin Prachnio".
On July 19, 2025 Marcin Prachnio faced off against Jimmy Crute in a middleweight bout at age 37. He was coming in with a record of 17-9 (12), and Crute was 29 years old and with a record of 12-4-2 (9). Prachnio lost the fight via 1st-round submission.
On July 27, 2024 Marcin Prachnio faced off against Modestas Bukauskas in a middleweight bout at age 36. He was coming in with a record of 17-8 (12), and Bukauskas was 30 years old and with a record of 15-6 (10). Prachnio lost the fight via 3rd-round submission.
On July 8, 2023 Marcin Prachnio faced off against Vitor Petrino in a middleweight bout at age 34. He was coming in with a record of 16-7 (12), and Petrino was 25 years old and with a record of 8-0 (6). Prachnio lost the fight via 3rd-round submission.
On April 23, 2022 Marcin Prachnio faced off against Philipe Lins in a middleweight bout at age 33. He was coming in with a record of 15-6 (12), and Lins was 36 years old and with a record of 14-5 (12). Prachnio lost the fight via 3-round unanimous decision.
On August 22, 2020 Marcin Prachnio faced off against Mike Rodríguez in a middleweight bout at age 32. He was coming in with a record of 13-5 (11), and Rodríguez was 31 years old and with a record of 10-4 (10). Prachnio lost the fight via 1st-round KO.
On September 15, 2018 Marcin Prachnio faced off against Magomed Ankalaev in a middleweight bout at age 30. He was coming in with a record of 13-4 (11), and Ankalaev was 26 years old and with a record of 8-1 (4). Prachnio lost the fight via 1st-round TKO.
On February 24, 2018 Marcin Prachnio faced off against Sam Alvey in a middleweight bout at age 29. He was coming in with a record of 13-3 (11), and Alvey was 31 years old and with a record of 31-10 (21). Prachnio lost the fight via 1st-round KO.
On December 6, 2014 Marcin Prachnio faced off against Aleksandar Rakić at age 26. He was coming in with a record of 5-2 (5), and Rakić was 22 years old and with a record of 5-1 (5). Prachnio lost the fight via 3rd-round TKO.
On April 4, 2014 Marcin Prachnio faced off against Ivica Tadijanov at age 25. He was coming in with a record of 2-1 (2). Prachnio lost the fight via 3-round unanimous decision.
