Seoul were looking to bounce back from an opening day defeat at the hands of Suwon Bluewings but were stretched by a Daejeon Citizen team enjoying a lively start to the season.

Quirinho Wagner da Silva scored two goals on his debut for Daejeon last week and carried on where he left off by opening the scoring against Seoul after 13 minutes with a fierce left-foot shot from the just inside the penalty area.

Seoul, who face Hangzhou Greentown of China on Tuesday, then opened their account for the season seven minutes before the break thanks to an own goal from Hwang Jae-hoon when he headed past his own goalkeeper.

All four of South Korea's four representatives in the 2011 Asian Champions League warmed up for the midweek games with mixed results.

Jeonbuk Motors won 1-0 at the home of Asian Champions League holders Seongnam Ilhwa Chunma to record their first league win of the season.

Central defender Shim Woo-yeon lashed home a corner after 34 minutes to give the visitors, who travel to Indonesia in midweek to take on Arema Malang, the lead.

Last year's K-League runners-up Jeju United face a lengthy trip to Melbourne next week and struggled to break down a resolute Incheon United as they were held to a goalless draw.

Finally, Suwon Bluewings came back from a goal down to defeat Gwangju FC 2-1.

Gwangju went ahead after just 25 seconds thanks to a goal from Kim Dong-sup but Mato Neretljak equalised for Suwon 12 minutes from time. The Croatian then scored the winner from the spot five minutes later.

Suwon take on China's Shanghai Shenhua on Wednesday.