South Korean professional football player who is known for his work with the Seattle Sounders FC as well as the Shanghai Shenhua. He is also known for his work as a defensive midfielder on the South Korean national team.
He first started his youth career playing for Bukyeong High School and later Hongik University. He then started his professional career when he made his debut with Daegu FC. That same year he also played on the South Korean Under 23 national team.
He is known for having won the Bronze Medal at the 2012 Summer Olympic Games as part of South Korea's Under 23 national team.
He was born and raised in Busan, South Korea.