After winning medals at the World Youth Championships,[4] he was first selected for the South Korean archery team in 2013, in which year he won team and individual medals at the 2013 Archery World Cup, finishing 4th in the World Cup Final in Paris, and reached the final of the 2013 World Archery Championships where he defeated teammate and Olympic champion Oh Jin-hyek.

[3] Lee, in his first international season, never finished out of the top eight in competition.

As well as his world title, he qualified for the World Cup Final courtesy of an individual gold medal at the fourth World Cup stage of the year in Wroclaw.

During the 2016 Summer Olympics, he won gold as part of the South Korean team, and qualified for the men's individual round.

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