Tennis Channel/USTA College Tennis Top 25: March 24, 2021
Rogers and Smith Top National Doubles Rankings; Three Featured in Singles Top 35 - NC State University Athletics
List of WTA number 1 ranked singles tennis players - Wikipedia
2019 WTA Tour - Wikipedia
WTA rankings shuffle in aftermath of 2019 Miami Open
Lady Vols Land Three on End-of-Fall ITA Rankings - University of Tennessee Athletics
Rankings Watch: Krejcikova closes in on Top 10, Burel into Top 100
US Open 2019: Day 7 Order of Play
Williams, Osaka, Barty highlight women's singles field for 2019 US Open - Official Site of the 2023 US Open Tennis Championships - A USTA Event
OU women's tennis: Sooners fall to No. 33 in latest ITA Rankings | Sports | oudaily.com
WTA Rankings Update 2019: Osaka regains No.1 spot, Andreescu surges into Top 15
WTA Rankings Update 2019: Paolini breaks Top 100, Flipkens flies up
Oracle/ITA Division I Women's Singles Rankings — April 16, 2019 - ITA #WeAreCollegeTennis
NAU Women's Tennis Achieves Highest Singles and Doubles National Rankings - Northern Arizona University Athletics
Oracle/ITA Division II Women's Team Rankings — April 3, 2019 - ITA #WeAreCollegeTennis
Top 10 Best Women's Tennis Players I WTA Ranking 2019 I Naomi Osaka is No. 1 - YouTube
Men and Women's Tennis Teams Each Crack Top 20 of ITA Rankings - University of Tennessee Athletics
Women's tennis breaks through to high rankings - The Daily Illini
Oracle/ITA Division I Women's Singles Rankings — April 9, 2019 - ITA #WeAreCollegeTennis
Projected Year-End WTA Rankings for 2020 - Tennis Connected
Australian Open: Petra Kvitova, Naomi Osaka battle for world No. 1
Ashleigh Barty Wins the French Open for Her First Grand Slam Singles Title - The New York Times
Bianca Andreescu upsets Serena Williams to win 2019 US Open - Official Site of the 2023 US Open Tennis Championships - A USTA Event
