In 2007 , SK defeated the Doosan Bears in six games to win the 2007 Korean Series - the first time the franchise had won the Korean Series - after finishing the season in first place .
In 2007 , under the new director Kim Sung-keun , SK defeated the Doosan Bears in six games to win the 2007 Korean Series - the first time the franchise had won the Korean Series - after finishing the league in first place .