Suwon Bluewings held on to third spot in the K-League thanks to a 1-1 draw at Seongnam Chunma in the last round of regular-season games.
Eddy Bosnar - with a trademark thumping free-kick - clinched the crucial point in the 52nd minute by cancelling out Everton Santos' 37th-minute strike.
Chunnam Dragons wrapped up the regular season with a 4-3 win at bottom club Gangwon FC.
A first-half brace from Lucio Flavio and Kim Young-wook's goal gave Chunnam the half-time advantage, with Ianis Zicu's double keeping Gangwon in contention. But Robert Cornthwaite gave the away team a two-goal cushion 15 minutes from time, with Denis Laktionov's 88th-minute effort only serving to reduce the arrears.
Gyeongnam secured eighth spot and the final championship play-off place with a 2-1 victory over Gwangju FC.
The result saw Gyeongnam edge out Incheon United and Daegu FC for a top-eight finish, the former being held to a goalless home draw by Jeju United and Daegu FC going down 2-0 at FC Seoul.
Second-placed Jeonbuk was held to a 1-1 draw at Ulsan Hyundai,
Socceroos star Tim Cahill did it again for New York Red Bulls with a stoppage time winner in the 1-0 Major Soccer League win over Los Angeles Galaxy at Red Bull Arena.