Tennis-World No.1 Djokovic unsure about going to Tokyo Games | Reuters
List of WTA number 1 ranked singles tennis players - Wikipedia
Who is the current world No. 1 in women's tennis? Updated WTA rankings and explainer | Sporting News
Swiatek confirmed new women's world No. 1 in latest WTA rankings | Daily Sabah
Who is the world No. 1 in men's tennis? Updated ATP rankings and explainer | Sporting News
Roger Federer: Oldest Man to be World Number 1 in Tennis - Global Village Space
Novak Djokovic Sets New All-Time Record For Weeks At No. 1 In FedEx ATP Rankings | ATP Tour | Tennis
Ash Barty, World's No. 1 Tennis Player, Retires at Age 25 – NBC Connecticut
Shintaro Mochizuki becomes world No. 1 for juniors | The Japan Times
WTA Rankings Update 2019: Barty the new No.1, Venus back in the Top 50
List of WTA Number 1 Tennis Players - All World No.1s In History | STEVE G TENNIS
Who is Kyle Edmund? British Number 1 tennis ace revealed | Daily Mail Online
Iga Świątek seals world No. 1 spot, becoming first Pole to top tennis rankings | Notes From Poland
Nadal is No. 1 in the world forever. Djokovic, Federer not on his level' | Tennis News - Hindustan Times
Cameron Norrie becomes British tennis number one after reaching Indian Wells semi-finals | ITV News
Russia's Daniil Medvedev to replace Novak Djokovic as world's No. 1 Tennis Player
Roger Federer Is World No. 1 Again Despite Not Playing for 2 Months
World No.1 Tennis player Novak Djokovic and wife test positive for Coronavirus, will remain in self-isolation for next 14 days
List of ATP number 1 ranked singles tennis players - Wikipedia
Djokovic on course in Cincinnati - CNN.com
Tennis: Naomi Osaka drops from world No. 1
Ashleigh Barty career statistics - Wikipedia
Wimbledon 2021: British No 1 Dan Evans expects Grand Slam to be very different this year | Tennis News | Sky Sports
Dan Evans on rise to British number one from being unranked in April 2018 - BBC Sport
