Roman Kopylov has four losses against four opponents on his MMA record. For a list of Kopylov's best fights, refer to "Best fights of Roman Kopylov".
On July 19, 2025 Roman Kopylov faced off against Paulo Costa in a middleweight bout at age 34. He was coming in with a record of 14-4 (12), and Costa was 34 years old and with a record of 14-4 (12). Kopylov lost the fight via 3-round unanimous decision.
On February 17, 2024 Roman Kopylov faced off against Anthony Hernandez in a middleweight bout at age 32. He was coming in with a record of 12-3 (11), and Hernandez was 30 years old and with a record of 11-2 (8). Kopylov lost the fight via 2nd-round submission.
On October 30, 2021 Roman Kopylov faced off against Albert Duraev in a middleweight bout at age 30. He was coming in with a record of 8-2 (7). Kopylov lost the fight via 3-round unanimous decision.
On November 9, 2019 Roman Kopylov faced off against Karl Roberson in a middleweight bout at age 28. He was coming in with a record of 8-1 (7), and Roberson was 29 years old and with a record of 8-2 (5). Kopylov lost the fight via 3rd-round submission.