Defending K-League Champions Jeonbuk Hyundai extended their lead on top of the table to four points, with a 2-0 away victory over their closest title rivals Ulsan.
Just a single point separated the two sides going into this game, which looked like a crucial match-up for the title race even this early in the season.
Ulsan came into this match as the only remaining unbeaten side in the league and was on a run of four straight wins in which they had scored 10 goals.
However, Jeonbuk was given a major boost when Ulsan was reduced to ten men after 27 minutes, as Kim Kee-Hee was sent off for a reckless two-footed tackle.
Jeonbuk then got in front when the side made the most of a quick free-kick situation, allowing Han Kyo-Won to score from the edge of the box just before half time.
Their lead would last for the rest of the match and was doubled in stoppage time when Takahiro Kunimoto managed to get beyond three Ulsan defenders and score an impressive solo goal to ensure the win.
Elsewhere, Gangwon’s losing streak continued, with their third consecutive defeat coming at the hands of Daegu FC. This result sees the side drop to sixth, while Daegu climbs to fourth place in the league.
FC Seoul picked up their first win in six games against Incheon, while Suwon’s struggles continued with a 1-0 home loss to Sangju Sangmu.