Ulsan, a professional soccer team, defeated Pohang in the East Coast Derby and succeeded in taking the lead.
Ulsan took the lead with Oh Se-hoon's opening goal in Pohang.
In the 37th minute of the first half, Oh Se-Hoon, who received a pass from Lee Dong-Jun, fired a right-footed turning shot like a thunderbolt, and Pohang keeper Jo Seong-Hoon's error play also added to the goal.
In the 5th minute of the second half, Bako finished the penalty kick awarded by Pohang keeper Jo Seong-hoon's foul.
Ulsan, who was sent off in the 29th minute of the second half, conceded a chase goal in the 39th minute of the second half, but won the East Coast Derby without conceding an additional goal and maintained the lead.
2nd place Jeonbuk defeated Gwangju 2-1 with Song Min-gyu's dramatic winning goal in extra time in the second half, and continued chasing leader Ulsan by one point.