K-League leaders Ulsan slipped up again on Wednesday as they slumped to a 1-0 home defeat against Seongnam.
Kim Cheol-Ho scored the only goal of the game in the second half at the Munsu Cup Stadium to ensure the hosts are now without a win in three games in all competitions.
Ulsan were held to a goalless draw at Busan I'Park on Sunday and were toothless once again, as champions Pohang Steelers and Jeju United took advantage by securing victories which moved them level on points with Cho Min-Kook's men.
Kim Seung-Dae helped himself to a second-half brace to double his K-League tally for the season in the Steelers' comfortable 3-0 home victory over Gyeongnam.
Kang Soo-Il had opened the scoring seven minutes before half-time as the home side stretched their unbeaten run in all competitions to seven games.
Kim has now scored in his last four games for the club.
Park Kyung-Hoon's United side leapfrogged Jeonbuk into third spot with a 2-0 win, which came courtesy of second-half goals from Yoon Bit-Garam and Kim Hyun.
Sangju Sangmu recorded their first league victory of the season at the seventh attempt by seeing off FC Seoul 2-1.
Ha Tae-Goon put them in front just before the half-hour mark and Lee Keun-Ho sealed the points after Sergio Escudero had come off the bench to equalise for the visitors.
Incheon United are now the only side still awaiting their first K-League triumph of the campaign, but the rock-bottom side were able to take a point from a goalless draw at home to Busan I'Park.
Suwon Bluewings were 1-0 winners against Chunnam Dragons in the other game to be played on Wednesday.
|Guardiola addresses Mourinho´s tactical foul claims|
|Call the doctor! Conte protests no malice in David Luiz absence|
|Sheffield Wednesday 0 Wolves 1: Brilliant Neves fires leaders seven clear|
|Premier League title City´s to lose, but Sterling wary of United charge|
|Barcelona´s Deulofeu a Clasico doubt after training injury|
|Salah ´is a player I rate a lot´, says Zidane|
|Allardyce lauds ´invaluable´ Rooney|
|Ramos fit for Club World Cup final|
|Lille sack Bielsa to end failed experiment|
|Manchester United job like Real Madrid, says Mourinho|
|Fernandinho is much better than I was, Guardiola claims|
|That Harry Kane team? – I´m over Guardiola dig, says Pochettino|
|Mourinho open to January moves as Griezmann rumours swirl|
|Berizzo set for Sevilla return after cancer surgery|
|Manchester City will not go unbeaten in Premier League - Guardiola|
|Man City are the best – Pochettino braced for Spurs´ toughest test|
|Conte hopeful over David Luiz´s ´serious´ knee injury|
|Neymar not an injury risk after Brazil trip - Emery|
|Bailly to miss three months due to ankle surgery|
|Klopp defends Liverpool rotation policy|
|Arsenal fan Prince Harry´s wedding day to clash with FA Cup final|
|He´s one of the best – Simeone showers Oblak with praise|
|Juventus won´t sell in-demand Pjaca, agent claims|
|Bolasie in line for Everton return after long-term injury|
|Maradona told Real Madrid to sign Mbappe|
|Sydney FC 3 Melbourne City 1: Champions come from behind to go eight points clear|
|Red-hot Salah wins Player of the Month|
|Heynckes unaware of reported Sanches loan termination|
|Maradona: I´d have won more Ballons d´Or than Ronaldo and Messi|
|Wenger confirms Wilshere contract talks imminent|
|We´ve never been approached by Man United – Wenger rejects Ozil reports|
|Lewandowski demands focus ahead of Christmas|
|Klopp right to rotate at Liverpool – Neville|
|Donnarumma plays down Milan exit rumours|
|Barkley could leave in January – Allardyce|
|Pulisic voted youngest-ever male USA player of the year|
|Griezmann will be allowed to leave – Simeone|
|Guardiola appears to aim another dig at Mourinho|
|Vardy relishing Fleetwood return|
|Almiron blocked from becoming Las Palmas coach|
|Ligue 1 adopts VAR from next season|
|Calabria extends AC Milan contract|
|Everton give new deals to Calvert-Lewin, Holgate & Kenny|
|Under-fire Hughes promises results will come for Stoke|
|Mourinho asked to explain pre-Manchester derby comments|
|Stoger sets Dortmund end of year target|
|Dyche: No swaggering from high-flying Burnley|
|Watzke plays down Nagelsmann rumour as Dortmund plan for 2018|
|Guardiola´s record runs with Manchester City, Bayern Munich and Barcelona compared|
|Benteke goal drought a concern for Hodgson|
|City look frightening – Rose|
|Kahn regrets rejecting Manchester United|
|Bayern wrapping up Ribery for Christmas|
|Wilshere no closer to signing fresh Arsenal contract|
|Resurgent Rooney has Europe´s best shot-conversion record|
|Pastore bullish over PSG chances against Madrid|
|Independiente boss overjoyed by ´dream´ Copa Sudamericana success|
|Silva is an animal - Guardiola|
|Wenger not blaming Sanchez for Arsenal´s goal woes|
|Mourinho can´t find room for misfiring Mkhitaryan|
|Guardiola tells fans Man City won´t stop after record-breaking win|
|Mirabelli: Donnarumma has to beg Milan if he wants to leave|
|Bayern lacked verve, says Heynckes|
|Di Maria wants more game time at PSG after goalscoring display|
|Gattuso: Donnarumma shaken by abuse from AC Milan fans|
|Pellegrino calls for Southampton reaction|
|Benitez ´needs to know´ extent of Newcastle´s transfer budget|
|Zidane will not request striker signing despite Benzema blanks|
|Bournemouth excellent in Old Trafford loss – Howe|
|Wilshere´s performance ´very positive´, says Wenger|
|Pochettino challenges Spurs to keep top-four berth|
|I´d be in Brazil if the title race was over – Mourinho|