Serena Williams becomes oldest female world number one - BBC Sport
With world number 1 Iga Swiatek virtually unknown to the general public- is tennis the most poorly marketed sport in the world?
Australian Tennis Player Ash Barty Is Currently Ranked Number One In The World
Japanese former tennis stars team up to find the next Naomi Osaka - Nikkei Asia
Katie Boulter replaces Emma Raducanu as British number one women's player - BBC Sport
Caroline Wozniacki: Is She Really the No. 1 Women's Tennis Player in the World? | News, Scores, Highlights, Stats, and Rumors | Bleacher Report
10 great moments: Martina Hingis
Britain's new female number one tennis ace Katie Boulter reveals who inspired her to get to the top | The US Sun
Naomi Osaka grabs No. 1 women's tennis ranking with Australian Open victory - MarketWatch
2019 WTA Tour - Wikipedia
Who is the world No.1 in women's tennis? Updated WTA rankings and explainer | Sporting News
Who is the world No.1 in women's tennis? Updated WTA rankings and explainer | Sporting News
Everything you always wanted to know about Iga Swiatek
The 50 Greatest Players of the Open Era (W): No. 1, Serena Williams
List of WTA number 1 ranked singles tennis players - Wikipedia
Women's tennis: World No.1 Ash Barty announces shock retirement | Tennis News | Al Jazeera
Deconstructing No. 1: The Top 16 Women Who Dominated on the Tennis Court | News, Scores, Highlights, Stats, and Rumors | Bleacher Report
Aryna Sabalenka reveals initial reaction to new No. 1 ranking at US Open – NBC New York
Aryna Sabalenka is about to be No. 1 in the WTA rankings. She could be the new Open champ, too - The Boston Globe
Iga Świątek seals world No. 1 spot, becoming first Pole to top tennis rankings | Notes From Poland
Ash Barty confirms place in tennis elite after ending third straight year as world No 1 | Ash Barty | The Guardian
Iga Swiatek: Why losing No. 1 ranking at US Open could be 'best thing that can happen' – Mats Wilander - Eurosport
Britain's new female number one tennis ace Katie Boulter reveals who inspired her to get to the top | The US Sun
Iga Swiatek To Become Top Women's Tennis Player :
How Iga Swiatek became the WTA World No. 1 - Tennis Majors
Barty becomes new No.1 in women's tennis
Karman Kaur Thandi new India No. 1 women's singles tennis player
List of WTA number 1 ranked singles tennis players - Wikiwand
