Kwon Won-il has five losses against four opponents on his MMA record. For a list of Won-il's best fights, refer to "Best fights of Kwon Won-il".
On January 24, 2025 Kwon Won-il fought Fabrício Andrade in a bantamweight title fight for Andrade's ONE Championship title. Won-il was 29 years old and with a record of 13-5 (12), and Andrade was 27 years old and with a record of 9-2 (6). Won-il lost the fight via 1st-round TKO.
On June 3, 2022 Kwon Won-il faced off against Fabrício Andrade in a featherweight bout at age 26. He was coming in with a record of 10-4 (9), and Andrade was 24 years old and with a record of 7-2 (4). Won-il lost the fight via 1st-round KO.
On January 31, 2020 Kwon Won-il faced off against Shoko Sato in a featherweight bout at age 24. He was coming in with a record of 7-3 (6). Won-il lost the fight via 1st-round submission.
On June 15, 2019 Kwon Won-il faced off against Koyomi Matsushima in a featherweight bout at age 23. He was coming in with a record of 6-2 (5), and Matsushima was 26 years old and with a record of 10-3 (6). Won-il lost the fight via 3-round unanimous decision.
On February 22, 2019 Kwon Won-il faced off against Masakazu Imanari in a featherweight bout at age 23. He was coming in with a record of 5-1 (4), and Imanari was 43 years old and with a record of 37-18-2 (27). Won-il lost the fight via 1st-round submission.
