List of Unseeded Women’s Players to Win Grand Slam Titles

Chris O'Neil 

Australian Open 1978

Serena Williams 

Australian Open 2007

Kim Clijsters 

US Open 2009

Jelena Ostapenko 

French Open 2017

Sloane Stephens 

US Open 2017

Marketa Vondrousova 

Wimbledon 2023