Lee won the 2013 Gunsan CC Open on the Korean Tour while still an amateur.

[2] He turned professional in 2014 and began playing regularly on the Korean Tour, winning the Gunsan CC Open again in 2015.

[2] He earned a 2015 Asian Tour card through qualifying school; as a rookie, he recorded two top-three finishes and placed 29th on the Order of Merit.

[3] Two weeks later he lost in a playoff for the GS Caltex Maekyung Open, a Korean Tour/OneAsia Tour event, a result that lifted him to a career-high 68 in the world rankings.

This biographical article relating to golf in South Korea is a stub.