Park Hyun-sung has two losses against two opponents on his MMA record. For a list of Hyun-sung's best fights, refer to "Best fights of Park Hyun-sung".
On October 18, 2025 Park Hyun-sung faced off against Bruno Gustavo da Silva in a flyweight bout at age 29. He was coming in with a record of 10-2 (9), and Silva was 35 years old and with a record of 14-7-2 (9). Hyun-sung lost the fight via 3rd-round submission.
On August 2, 2025 Park Hyun-sung faced off against Tatsuro Taira in a flyweight bout at age 29. He was coming in with a record of 10-1 (9), and Taira was 25 years old and with a record of 16-1 (11). Hyun-sung lost the fight via 2nd-round submission.
