Career
Sunderland
In June 2011, Ji agreed a deal to join Sunderland of the English Premier League as a summer transfer after impressing manager Steve Bruce with his performance in the 2011 Asian Cup, in which he scored four goals and provided two assists in six games. He signed a three-year deal for an undisclosed fee (believed to be around £2 million). He made his first appearance for his new club in a 1–1 draw with Arminia Bielefeld in the club"s pre-season tour of Germany.
He scored his first goal for Sunderland in a pre-season friendly against Darlington.
Ji made his league debut for Sunderland on 13 August 2011 coming on for Asamoah Gyan in the 66th minute against Liverpool. Ji scored his first Premier League goal in the 90th minute against Chelsea from a Nicklas Bendtner assist on 10 September 2011, to which Sunderland lost 2–1.
Augsburg
On 1 January 2013, Ji signed for German club Football Club Augsburg on loan for the rest of the season, where his national teammate midfielder Koo Ja-Cheol was also on loan. On 24 February 2013, he scored his debut goal for Augsburg in a game against TSG 1899 Hoffenheim.
On 14 April, Ji scored two goals against Eintracht Frankfurt, single-handedly clinching a 2–0 victory for his side.
On 18 May 2013, Ji scored his fifth goal of the season which led to a 3–1 victory over SpVgg Greuther Fürth, helping Football Club Augsburg avoid relegation. On 17 January 2014, Sunderland announced that Ji has signed a contract with Football Club Augsburg on a permanent switch for an undisclosed fee until the end of the 2013-2014 Bundesliga season and will sign for Borussia Dortmund on 1 July 2014. On 25 January 2014, Ji started his second spell with Augsburg in style against his future employer Borussia Dortmund.
After being substituted into the game with 20 minutes left to play, Ji scored a header to draw the game 2–2.
Borussia Dortmund
On 17 January 2014, Borussia Dortmund officially announced that the club has committed to Ji such that, after his six-month contract with Augsburg for the remainder of the 2013-2014 Bundesliga season, Ji will sign a four-year contract with Borussia Dortmund, effective 1 July 2014. Return to Augsburg
On 22 December 2014, after failing to appear competitively for Borussia Dortmund, Ji signed a three-and-a-half-year contract with Football Club Augsburg, until 30 June 2018.
As an international Ji has represented his native South of Korea at Under-20, Under-23 and senior level International goals
Results list South of Korea"s goal tally first.
Ji grew up in Chuja Island, a small island northwest of Jeju Island.
His father is a retired volleyball player. Ji graduated from Gwangyang Jaechul High School in 2010.