Left back and midfielder who joined Mainz 05 in 2013 after spending two years with Basel. He became a member of the South Korean national team in 2010.
He debuted professionally for Mito HollyHoock in 2008.
He appeared in 34 matches for Jubilo Iwata during the 2010-11 season.
He was born in Seoul, South Korea.
He and Lee Bum-young became teammates on the South Korean national team.
