Ulsan took a step further to claiming the K-League title on Sunday, while Gangwon's survival hopes were given a massive boost.
Kim Ho-Gon's Ulsan side took a five-point lead at the top of the standings as they secured a 2-1 home triumph over Suwon Bluewings.
Brazilian Rafinha put the 2005 champions into the lead on the 14th minute at the Munsu Cup Stadium, only to see his effort cancelled out by Seo Jung-Jin five minutes before the break.
But the home side were not to be denied the maximum haul and Kim Shin-Wook secured the points in the 65th minute.
Pohang Steelers and Jeonbuk Motors trail Ulsan by five points, but the latter have the benefit of a game in hand.
Elsewhere in the Championship Round, Busan l'Park and Incheon United played out a 0-0 draw at the Asiad Stadium.
In the battle to avoid the drop, Gangwon earned a huge three points with a 2-1 victory over Chunnam Dragons on Sunday, and in the process extended their unbeaten streak to four matches.
Kim Yong-Kab's men went into a 2-0 half-time lead thanks to a Lee Woo-Hyuk strike an a penalty from Lee Joon-Yeob on the stroke of half-time.
They were given a scare in the 68th minute when Lee Jong-Ho halved the deficit, but held firm.
They now move level on points with Daegu, who were just three minutes away from claiming a vital maximum haul in their 2-2 home draw with Seongnam.
Server Djeparov's penalty had put the away side into a half-time lead, but Baek Jong-Cheol's charges stormed back through Cho Young-Hoon and Yoo Kyoung-Youl.
However, they were unable to see out the victory and in the 87th minute Kim Han-Yoon silenced the home fans to claim a point for Seongnam.
Gyeongnam remain firmly locked in the relegation battle after they fell to a 2-1 defeat at home to Jeju United on Saturday.
Bae Ki-Jong opened the scoring for the away side after quarter of an hour, only for Kang Seung-Jo to level proceedings in the 62nd minute.
However, they were level for just two minutes as Bae notched his second of the game, to leave Gyeongnam just three points above the relegation zone.
|Coach: Ho-Gon Kim|
for Sang-Woon Han 46'
for Sung-Hwan Kim 84'
for Yong-Tae Kim 86'
|K-League Preview: Jeonnam, Jeonbuk do battle|
|CONCACAF Champions League: Cruz Azul 0 Toluca 0|
|Dortmund relieved to beat Wolfsburg|
|Arsenal sack Alfaro|
|Mineiro lose patience with tardy Anelka|
|Unfinished Sao Paulo stadium handed to Corinthians|
|Ranieri ignoring speculation|
|Giroud regaining confidence, says Wenger|
|Poyet: ´I´m not going to quit´|
|Allardyce laments costly defensive errors|
|Wenger delighted with Arsenal spirit|
|Coupe de France: Rennes 3 Angers 2|
|Football League Wrap: Barnsley off the bottom, Luton promoted|
|AFC Champions League Wrap: Guangzhou suffer shock defeat, Yokohama beat Jeonbuk|
|Premier League: Arsenal 3 West Ham 1|
|DFB-Pokal: Borussia Dortmund 2 Wolfsburg 0|
|Dyer: Bust-up claims blown out of proportion|
|Gundogan extends Dortmund contract|
|Laudrup backs Messi to shine in Copa final|
|Pellegrini: Liverpool defeat changes nothing|
|I have picked most of Italy squad - Prandelli|
|Mannone must wait for contract talks|
|Alex confident on new PSG deal|
|Wilmots signs four-year Belgium extension|
|Liverpool unites for Hillsborough anniversary|
|Nuremberg confirm Ott signing|
|Amalfitano keen on Premier League stay, says agent|
|Reinartz undergoes Achilles surgery|
|Villa suspend two backroom staff|
|Guardiola reveals Neuer doubt|
|Ancelotti urges Real to cut out errors|
|Fulham have seen the light, says Richardson|
|Chelsea interest in Costa ´normal´ - Simeone|
|Martino: Puyol could return against Real|
|Toure out for two weeks|
|Ronaldo to miss Copa del Rey final|
|Allardyce reveals Drmic scouting mission|
|Iniesta ´convinced´ of Copa del Rey success|
|Hillsborough behind emotional Gerrard reaction|
|Premier League to investigate Cardiff leak claims|
|Juve continue Scuffet praise|
|Returning players can aid survival, says Brunt|
|Martinez cools Barkley rumours|
|We do not go to Munich to swap shirts - Runjaic|
|Pulis eyes permanent deal for Ince|
|Ireland pens new Stoke deal|
|Llorente, Giovinco not getting carried away|
|Allardyce: Emirates expense behind Arsenal slump|
|Gago´s World Cup hopes hit|
|Treat Norwich like best team in the world, says Gerrard|
|Guidolin: Juventus were the better team|
|Sammer issues Bayern warning|
|Montanier warns Rennes ahead Angers clash|
|Berlusconi blocked Chelsea transfer, says Pirlo|
|Guzan: Villa desperate to reward fans|
|Anelka´s future remains unclear|
|Grobbelaar still haunted by Hillsborough disaster|
|Hecking: Wolfsburg can hurt Dortmund|
|Schuster questions Malaga´s effort|
|Paraguay Division Profesional Wrap: Libertad maintain unbeaten run|
|Inter confirm Torres interest|
|Pirlo: I thought about quitting|
|Swansea play down ´brawl´ reports|
|MLS Preview: Red Bulls, Timbers near breakthrough win|
|La Liga: Athletic Bilbao 3 Malaga 0|
|Conte relieved after Juve victory|
|Primeira Liga: Estoril 1 Pacos de Ferreira 0|
|Championship: Reading 1 Leicester City 1|
|Serie A: Udinese 0 Juventus 2|
|Klopp underlines importance of hard work|
|Doping case against Acerbi dismissed|
|Turkish Super Lig Wrap: Fenerbahce move step closer to title|
|Strootman vowing to come back stronger|
|Russian Premier League Wrap: Hulk treble sends Zenit top as Lokomotiv held|
|Rafinha handed three-match ban|
|FIFPro prepare for legal battle|
|Premier League Preview: Everton v Crystal Palace|
|Rangel calls for Swansea unity|
|Gazidis questions FA Cup final ticket allocation|
|Pieters admits World Cup dream is unlikely|
|Pardew defiant in face of criticism|
|Benitez pleased with Mertens´ progression|
|Coupe de France Preview: Guingamp v Monaco|
|Copa del Rey Preview: Barcelona v Real Madrid|
|Khedira returns to Real training|
|Helsingborg-Djurgarden fixture will not be replayed|
|Martinez expects tough Palace test|
|All is well with Messi, insists Zubizarreta|
|Solskjaer calls for focus ahead of relegation run-in|
|Knee injury rules Willems out for the season|
|Premier League Preview: Manchester City v Sunderland|
|Faulkner calls for Villa to ´pull together´|
|DFB-Pokal Preview: Bayern Munich v Kaiserslautern|
|Chelsea experience could be key, says Cech|
|Hertha make Cigerci loan permanent|
|Bayern secure Rode signature|
|Davies: Hull can shock Arsenal|
|Pulis still wary of relegation|
|Puyol ´would stay´ at Barca|
|Nainggolan hopeful of World Cup spot|
|West Ham still not safe, says Allardyce|
|Traore agrees Monchengladbach switch|
|Olic set for Wolfsburg stay|
|Koscielny, Rosicky in contention for Arsenal return|
|Ancelotti refuses to rule Ronaldo out of Copa final|
|Poyet bemoans ´fundamental problems´|
|Sammer refutes Mandzukic exit rumours|
|Podolski reveals frustration at Arsenal role|
|Leverkusen have work to do, says Lewandowski|
|Montolivo plays down Europa League chances|
|PSG not over Chelsea defeat, claims Blanc|
|Title race not over, says Demichelis|
|Matches turn to finals for Simeone|
|Gerrard ready for ´biggest month of career´|
|Godin hopes Costa can stay fit|
|CONCACAF Champions League Preview: Cruz Azul v Toluca|
|Argentina Primera Division Wrap: Jara, Carrillo combine in Estudiantes win|
|Colombia Primera A Wrap: Atletico Nacional edge clear|
|Liga MX Wrap: Cruz Azul lead cut, Toluca edge Leon|
|Venezuela Primera Division Wrap: Mineros continue El Vigia´s woeful season|
|Liga del Futbol Profesional Boliviano Wrap: Real Potosi slip out of top four|
|Ecuador Primera A Wrap: Independiente miss chance, Emelec held|
|Costa Rica Primera Division Wrap: Saprissa tighten grip on top spot|
|Chile Primera Division Wrap: Colo Colo continue dominance|
|Uruguay Primera Division Wrap: Penarol overhaul Fenix|
|Serie A Wrap: Milan, Inter, Torino win as race for Europe hots up|
|Cavani has mind on World Cup, says Blanc|
|Benfica´s Oblak suffers concussion|
|Seedorf paying no attention to Serie A table|