관련 규정을 개정한 것은 2018년 딸을 출산한 뒤 대회를 한동안 뛰지 않아 세계랭킹이 큰 폭으로 하락, 이듬해 US여자오픈 출전자격을 잃은 스테이시 루이스의 청원에 따른 것이다.
The revision of the related regulations was due to the petition of Stacy Lewis that as her world ranking fell significantly for not playing in the competition for a while after giving birth to her daughter in 2018, she lost her qualification for the US Women's Open the following year.