Ashleigh Barty won 3 Grand Slam singles titles — the 2019 French Open, 2021 Wimbledon and 2022 Australian Open — and finished as year-end world No. 1 for three consecutive years (2019–2021). She retired in March 2022 at age 25 while still the reigning world No. 1 and Australian Open champion, one of the most abrupt retirements from the top of the sport.