2018 Novak Djokovic tennis season - Wikipedia
Federer marks No.1 ranking with 98th title in Stuttgart - EgyptToday
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
US Open 2018: British No 1 Kyle Edmund knocked out in first round after struggling with cramp | The Independent | The Independent
No. 1 Halep wins suspended match, advances in Cincinnati - Sportsnet.ca
World No. 1 Halep Joined By Past US Open Champions in 2018 Field | Long Island Tennis Magazine
Marin Cilic desires to win Grand Slam and become No. 1 in 2018
Roger Federer replaces Rafael Nadal as tennis World No. 1, Novak Djokovic slips | Tennis News - Hindustan Times
Wimbledon 2018: World No.1 Simona Halep Knocked Out In Third Round; Rafael Nadal, Novak Djokovic Advance | Tennis News
2018 champion Kerber vs. No. 1 Barty in Wimbledon semifinals | AP News
Tennis finishes first meet of season - Northwest Missouri State Athletics
Throwback: When Roger Federer won the 2018 Rotterdam Open to become the oldest World No. 1
:focal(1020x328:1022x326)/origin-imgresizer.eurosport.com/2018/02/17/2273705-47372890-2560-1440.jpg "New world No 1 Federer reaches Rotterdam final - Eurosport")
New world No 1 Federer reaches Rotterdam final - Eurosport
Djokovic Presented Year-End ATP World Tour No. 1 Trophy At Nitto ATP Finals - Tennis TourTalk
No. 1 Novak Djokovic advances in Australia; Stan Wawrinka out
:focal(1211x566:1213x564)/origin-imgresizer.eurosport.com/2018/01/18/2248178-46862350-2560-1440.jpg "World no.1 Simona Halep makes light work of Eugenie Bouchard in second round - Eurosport")
World no.1 Simona Halep makes light work of Eugenie Bouchard in second round - Eurosport
Tennis: Medvedev first man in 18 years other than 'Big 4' to be world No 1 - The Week
Top 5 WTA Upsets 2018 (No.1): Sasnovich shocks title favorite Kvitova in Wimbledon opener
New world No.1 Roger Federer wins Rotterdam Open - Vanguard News
Roger Federer Pursues the No. 1 Ranking Again. Why Not? - The New York Times
2018 high school spring previews: Boys tennis
U.S. Open 2018: No. 1-seed Simona Halep upset in 1st round by No. 44 Kaia Kanepi – The Denver Post
2018 champion Angelique Kerber, No. 1 Ash Barty into Wimbledon semifinals | Sports News,The Indian Express
Tennis Rankings: Novak Djokovic displaces Roger Federer as World No 2; Simona Halep to finish as World No 1 | Sports News,The Indian Express
No. 1 Barty Beats 2018 Champ Kerber To Reach Wimbledon Final
US Open Tennis 2018 Results: Tuesday's Singles Bracket Winners, Scores, Stats | News, Scores, Highlights, Stats, and Rumors | Bleacher Report
