Ashleigh Barty and Katerina Siniakova secure WTA World No.1 rankings
World No. 1 Halep Joined By Past US Open Champions in 2018 Field | Long Island Tennis Magazine
2018 champion Kerber vs. No. 1 Barty in Wimbledon semifinals
Rafael Nadal, Spanish professional tennis player ranked No. 1 in the world, practices on Arthur Ash court before the start of the US Open tennis championship at the USTA Billie Jean King
Karolina Pliskova Gets the Opponent She Craves: Serena Williams - The New York Times
Throwback: When Roger Federer won the 2018 Rotterdam Open to become the oldest World No. 1
Djokovic Completes Remarkable Return To No. 1 | ATP Tour | Tennis
Roger Federer Pursues the No. 1 Ranking Again. Why Not? - The New York Times
Tennis Rankings: Novak Djokovic displaces Roger Federer as World No 2; Simona Halep to finish as World No 1 | Sports News,The Indian Express
Tennis: 4 contenders for the year-end No. 1 World Ranking
Mountain View girls tennis looks solid early on - The Columbian
The world's No. 1 tennis star embraced an 'underdog' mentality to fuel her run to the US Open final
U.S. Open 2018: No. 1-seed Simona Halep upset in 1st round by No. 44 Kaia Kanepi – The Denver Post
Top 5 WTA Upsets 2018 (No.1): Sasnovich shocks title favorite Kvitova in Wimbledon opener
List of ATP number 1 ranked singles tennis players - Wikipedia
2018 high school spring previews: Boys tennis
US Open 2018: British No 1 Kyle Edmund knocked out in first round after struggling with cramp | The Independent | The Independent
Impressive Stretch Of Tennis For British No. 1 Kyle Edmund
2018 Australian Open: No. 1 Halep wins classic, will face Wozniacki in final - CBSSports.com
Roger Federer will top tennis rankings after five-year absence - The Boston Globe
ATP Rankings Movers: Rafael Nadal Returns To No. 1 | ATP Tour | Tennis
2018 champion Kerber vs. No. 1 Barty in Wimbledon semifinals – Oneida Dispatch
Roger Federer reclaims No. 1 ranking by reaching Stuttgart final
World no. 1 junior Chun Hsin Tseng eyes Grand Slams history - Official Site of the 2022 US Open Tennis Championships - A USTA Event
No. 1 McNeese, No. 3 Northwestern State Set for Sunday's Women's Tennis Final - Southland Conference
Swiatek wins easily, but knows who's No. 1; Nadal bloodied | AP News
