South Korean football forward Ji Dong-won has announced his retirement after 16 years as a professional player. He debuted in the K League by joining Jeonnam Dragons in 2010 and later played for Sunderland in the English Premier League, becoming 'the youngest Korean Premier League player ever'. In the 2012 London Olympics, he scored in the quarter-finals, leaving his name in the history of Korean football. Ahead of his retirement, Ji Dong-won expressed his gratitude to fans through social media.