Gyeongnam posted their first win of the K-League season in the second round of fixtures on Sunday.
In a tight game, Jae-An Lee scored the decisive goal on the hour-mark as Gyeongnam defeated Busan lPark 1-0.
They now sit sixth with four points from two games while Busan are without a win from two.
In Sunday's other match, Chunnam Dragons rescued a point away to Daegu with Hyeon-Chul Jeon's late strike sealing a 1-1 draw at the Daegu Main Stadium.
Soon-Min Hwang gave Daegu the lead when he netted six minutes from half-time, but Jeon was on hand with seven minutes to play to ensure the sides shared the spoils.