A Nam Jun-Jae goal on the stroke of half-time was enough for Seongnam to beat their local rivals Suwon. The result allowed Jeonbuk to extend their lead at the top but they left it late with Lee Geun-Ho equalizing against Jeonnam in the eighty-sixth minute before Leonardo grabbed an injury-time winner from the penalty-spot. The result means that Jeonbuk extend their lead at the top to ten points, at the same time Daejeon reduced the gap between them and second-from-bottom Busan to ten points with their first win since April. Wanderson got the two goals that they needed for their first three points as they beat Gwangju by two goals to one. Former Daejeon striker Adriano continued for Seoul where he left off for Daejeon, grabbing two more goals as Seoul beat Busan four-two. Server Djeperov earned Ulsan a point with a goal against Pohang who took the lead through Ko Mu-Yeol, while Incheon beat Jeju United by a goal to nil.