Seongnam, who downed Gyeongnam FC on Saturday, were the chief beneficiaries on a day when the none of the five chasing teams were able to pick up three points.

Seoul have now failed to find the net in the last four K-League games and would have been defeated had it not been for an impressive performance from ex-Pohang goalkeeper Kim Byung-ji and wayward finishing from the hosts.

Ulsan Hyundai Horang-I, champions in 2005, could have taken advantage and moved into second with a win at lowly Daegu FC.

But the hosts had other ideas and took the lead after 36 minutes through Luciano.

They were still celebrating a minute later as Ulsan winger Lee Chun-soo finished from close range after good work from Woo Sung-young on the right to send the teams in level at the break.

Daegu re-established their lead three minutes after the interval with a delicately-curled free-kick by Brazilian striker Enio and, midway through the second half, compatriot Luciano claimed his second of the game and seventh of the season to make it 3-1 for Daegu.

Meanwhile, Busan I'Park were held to a 2-2 draw at Daejeon Citizen.