Atthaya Thitikul has become the youngest golfer ever to win a professional golf tournament aged 14 years, 4 months and 19 days after winning the Ladies European Thailand Championship as an amateur on 9 July 2017. She turned professional in January 2020 and in December 2021, Thitikul earned her card for the 2022 LPGA Tour through qualifying school.
On 27 March 2022, Thitikul won for the first time on the LPGA Tour at the JTBC Classic. While still age 19 in September 2022, Thitikul had two wins on the professional LPGA Tour and four wins on the Ladies European Tour. On 31 October 2022, Thitikul became the number 1 ranked golfer in the Women’s World Golf Rankings and was considered to be the fastest rising star in golf. On 10 November, she was named the 2022 LPGA Tour Rookie of the Year.