Became world No.1 during a 2019 campaign in which she won her first two major titles, a three-stroke victory at the ANA Inspiration (now the Chevron Championship) being followed by a two-shot success at the Evian Championship. Those wins came four years after she was runner-up to Inbee Park on her debut in the AIG Women’s Open at Turnberry, an event which came just a few weeks after her 20th birthday. In 2018 won her very first tournament as an LPGA member – only the second player ever to do so – and was the tour’s Rookie of the Year.
Since then has twice been Player of the Year, winning no fewer than five times last year and this March adding the HSBC Women’s Champions. Came close to a third major crown at the 2020 US Women's Open, being pipped by fellow Korean Kim A-lim.