In 2019, Lee won her first major championship at the U.S. Women's Open, and was named the 2019 LPGA Louise Suggs Rolex Rookie of the Year.

Lee played her first LPGA Tour event in 2017, finishing in a tie for fifth place at the U.S. Women's Open.

[4] In June 2019, she won the U.S. Women's Open by two strokes over Ryu So-yeon, Lexi Thompson and Angel Yin.

[6] She took a five-shot lead into the final round but ended up losing in a playoff to Minjee Lee.

[7] LPGA Tour playoff record (0–2) Events in bold are KLPGA majors.