in 2009, and reached a career high ranking of No. 4 in singles on 13 May 2019, becoming the highest ranking female Dutch player in WTA history; she had a career high doubles ranking of No. 16 in the world, achieved on 16 April 2018. She won 10 WTA singles titles, including two WTA 1000 titles at the 2018 Western & Southern Open and the 2019 Mutua Madrid Open, and also won 10 WTA doubles titles. Furthermore, she reached the quarterfinals of the 2017 Wimbledon Championships, and the semifinals on the 2016 French Open. She announced on 16 June 2021 that 2021 will be her final season due to ongoing injuries, and that her final event would be the 2020 Summer Olympics in Tokyo. Bertens officially retired from the sport after opening round defeats in both singles and doubles at the Olympics, ranked No. 24 in singles and No. 112 in doubles. Nicole Gibbs (born 3 March 1993 in Cincinnati, United States) joined the professional tour in 2013 and reached a career-high ranking of No. 68 in singles in July 2016 and No. 107 in doubles in September 2016. She announced her retirement in February 2021 after battling with oral cancer in 2019 and plans to attend law school. Anna-Lena Grönefeld Bojana Jovanovski Petrović Vania King (born 3 February 1989 in Monterey Park, California, United States) turned professional in 2006 and reached a career high ranking of 50 in singles and 3 in doubles. King reached three WTA singles finals during her career, winning one of them at the Bangkok Open in 2006. She was most known as a doubles specialist, winning fifteen titles in her career, with her biggest achievements coming in winning the women's doubles events at both Wimbledon and the US Open in 2010, alongside Yaroslava Shvedova. King was hampered by an ankle injury throughout the final years of her career, and despite undergoing surgery in 2017, King decided to retire in February 2020 however due to the impacts from the COVID-19 pandemic, she officially retired in April 2021 following a farewell tour. Johanna Konta (born 17 May 1991 in Sydney, Australia) turned professional in 2008, initially representing Australia, before switching allegiance to Great Britain in 2012. She reached a career high singles ranking of No. 4 in the world on 17 July 2017, becoming the first British woman since Jo Durie to be ranked inside the