Naomi Osaka retains top spot in Women's Tennis Association rankings - India Today
Tennis: Women's singles players who have held the WTA No. 1 ranking
Oracle/ITA Division I Women's Singles Rankings — April 9, 2019 - ITA #WeAreCollegeTennis
2019 US Open – Women's singles - Wikipedia
China's Wang Qiang up to No. 12 in WTA rankings after U.S. Open - CGTN
Women's Tennis Scores | WTA Tennis
Naomi Osaka grabs No. 1 women's tennis ranking with Australian Open victory - MarketWatch
Oracle/ITA Division I Women's Singles Rankings — April 16, 2019 - ITA #WeAreCollegeTennis
Top Ten Women's Singles Tennis Players in 2019 – Tennis Academy
Bianca Andreescu upsets Serena Williams to win 2019 US Open - Official Site of the 2022 US Open Tennis Championships - A USTA Event
Brilliant Barty rewarded with No.1 ranking - Roland-Garros - The 2023 Roland-Garros Tournament official site
Lewis Ranked No. 110 in ITA Singles Rankings - Michigan State University Athletics
Best Women's Tennis Players In History - The Delite
Oracle/ITA Division I Women's Singles Rankings — February 20, 2019 - ITA #WeAreCollegeTennis
Top 14 Women's tennis WTA Singles players World rankings (2007-2019) - YouTube
Ash Barty's Wimbledon exit will not stop her from holding onto world number one ranking - ABC News
World rankings of the top 20 women tennis players in 2022 - SportsBrief.com
Women's tennis breaks through to high rankings - The Daily Illini
Oracle/ITA Division II Women's Team Rankings — April 10, 2019 - ITA #WeAreCollegeTennis
Top 5 Ranking Female Tennis Players 2019 • Lists.ng
Barty Still Tops Unchanged Women's ATP Rankings Post-Wimbledon | Sportpesa Scores & News
Top 5 ranked Tennis Women's Players Right Now (April 2022 Ranking)
2019 WTA Tour - Wikipedia
