Alcaraz beats Cilic and could become youngest ever world number one: What does he need to achieve it? | Marca
Tennis world number ones in pictures: Here is every man to hold top spot since computer rankings were introduced | Novak Djokovic record, Roger Federer, Rafael Nadal, Daniil Medvedev, Carlos Alcaraz
World No. 1 Tennis Player Tests Corona Positive
Iga Świątek to replace Ash Barty as women's world number one - ABC News
Medvedev replaces Djokovic as world number one
Iga Świątek seals world No. 1 spot, becoming first Pole to top tennis rankings | Notes From Poland
Best tennis players in the world: From Roger Federer to Serena Williams
Alcaraz wins US Open and becomes youngest world number one | Tennis News | Al Jazeera
Revealed: World's Greatest Tennis Players of All Time - CEOWORLD magazine
Tennis Masters Series singles records and statistics - Wikipedia
List of ATP number 1 ranked singles tennis players - Wikipedia
Australia's Ashleigh Barty Is Now the Number One Female Tennis Player
Cameron Norrie stuns former world number one Rafael Nadal in United Cup | Tennis News | Sky Sports
Poland's Iga Swiatek will succeed Ash Barty as world No 1 after Miami Open second-round win | Tennis News | Sky Sports
Tennis-World number one Barty uncertain of schedule as Osaka closes in | Reuters
No longer fighting to be world number one: Rafael Nadal | Deccan Herald
Novak Djokovic: World's number one tennis player to miss Miami Open due to vaccination status | CNN
Novak Djokovic equals Steffi Graf's record for most weeks as world number one - BBC Sport
World No.1 Ashleigh Barty hopes 2020 will be golden year
Women's Tennis Falls at No. 18 Michigan - Princeton University Athletics
Medvedev will become world number one after Djokovic's defeat at Dubai Open
