List of WTA number 1 ranked tennis players - Wikipedia
Andrea Petkovic - Sport360
Are Women's Tennis Rankings More Volatile than Men's Rankings? — DataBuckets
Michael Pavitt: Rankings freeze repercussions for tennis visible as thaw begins
Garbiñe Muguruza - Wikipedia
Lucie Safarova Reaches Career-Best Sixth in WTA rankings | Tennis News
WTA and ITF to increase ranking points at World Tennis Tour events in 2021
WTA Rankings - Sport360
Romanians in the WTA ranking: Halep keeps position, Begu and Niculescu go down | Romania Insider
38 JULIA GOERGES Germany 2/November/1988 2016 WTA singles ranking: #54 2015 Hot-100 list: #32 | Julia goerges, Tennis players female, Ladies tennis
2015 WTA year-end rankings, highlights from season - Sports Illustrated
Analysis of men's and women's tennis performance finds differences from match format
WTA hotties: 2015 Hot-100: #75 Arantxa Rus (@arantxarus)
WTA RANKINGS 30-11-2015: Wickmayer almost breaks in the top 40, Bouchard is 49th
Glimpsing a Future Without Serena Williams - The New York Times
This is how the WTA ranking works | BBVA
wta on Twitter: "Doubles World No.1s @SaraErrani & @Roberta_Vinci part ways--> http://t.co/WMF48spDrp #WTA #tennis http://t.co/wf8bQsLmNK"
Top 20: WTA players with most ranking points of the decade
Tennis on Twitter | Tennis players female, Tennis clothes, Tennis photos
National record
2015 Serena Williams tennis season - Wikipedia
Pole positions: All of Poland's Top 100 players
