London, June 22: The following are the women's singles stars to watch out for at the Wimbledon tennis championships starting on Monday (June 27), according to Xinhua:

Serena Williams, United States

World ranking: 1

Age: 34 (26/09/1981)

Career titles in total: 70

Grand Slam titles: 21 -- Australian Open: 2003, 2005, 2007, 2009, 2010, 2015; French Open: 2002, 2013, 2015; Wimbledon: 2002, 2003, 2009, 2010, 2012, 2015; US Open: 1999, 2002, 2008, 2012, 2013, 2014

Career prize money: $77,564,981

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Garbine Muguruza, Spain

World ranking: 2

Age: 22 (08/10/1993)

Career titles in total: 3

Grand Slam titles: 1 -- French Open: 2016

Career prize money: $8,798,067

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Agnieszka Radwanska, Poland

World ranking: 3

Age: 27 (06/03/89)

Career titles total: 18

Grand Slam titles: 0

Career prize money: $23,145,034

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Angelique Kerber, Germany

World ranking: 4

Age: 28 (18/01/1988)

Career titles in total: 9

Grand Slam titles: 1 -- Australian Open: 2016

Career prize money: $12,406,351

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Petra Kvitova, Czech Republic

World Ranking: 11

Age: 26 (08/03/1990)

Career titles total: 17

Grand Slam Titles: 2 -- Wimbledon 2011, 2014

Career prize money: $20,919,535

IANS