Ashleigh Barty: World number one makes shock call to quit tennis - BBC News
World No. 1 Tennis Player Tests Corona Positive
World No.1 Ashleigh Barty hopes 2020 will be golden year
ATP rankings - Wikipedia
No longer fighting to be world number one: Rafael Nadal | Deccan Herald
List of ATP number 1 ranked singles tennis players - Wikipedia
:focal(1355x470:1357x468)/origin-imgresizer.eurosport.com/2016/11/05/1964227-41280027-2560-1440.jpg "Andy Murray: Latest news and updates, net worth, age, coach, world ranking, ATP and Olympic success - Eurosport")
Andy Murray: Latest news and updates, net worth, age, coach, world ranking, ATP and Olympic success - Eurosport
Carlos Alcaraz vs. Frances Tiafoe result, score, highlights as Spanish teenager makes US Open final | Sporting News Australia
Best tennis players in the world: From Roger Federer to Serena Williams
Alcaraz beats Cilic and could become youngest ever world number one: What does he need to achieve it? | Marca
List of WTA number 1 ranked singles tennis players - Wikipedia
Alcaraz wins US Open and becomes youngest world number one | Tennis News | Al Jazeera
Poland's Iga Swiatek will succeed Ash Barty as world No 1 after Miami Open second-round win | Tennis News | Sky Sports
Alcaraz wins US Open and becomes youngest world number one | Tennis News | Al Jazeera
Martín Landaluce, new junior world number 1 | Rafa Nadal Academy
JAG WOMEN'S TENNIS DROPS TO FAU - University of South Alabama Athletics
Former world number one Halep provisionally suspended for doping | Reuters
Tennis-World number one Barty uncertain of schedule as Osaka closes in | Reuters
Mastercard Incorporated - Mastercard Adds World Number One Tennis Player Naomi Osaka to Global Sponsorship Portfolio
Djokovic equals Graf's world number one record
Former world number one Simona Halep provisionally suspended for doping | Tennis News - Times of India
Wozniacki wants last hurrah after bravery loses out to brittleness | Caroline Wozniacki | The Guardian
Nadal: 'Number one ranking no longer the fight' - Sportstar
World number one Alcaraz ruled out of Australian Open due to injury - Read Qatar Tribune on the go for unrivalled news coverage
