Ash Barty, World's No. 1 Tennis Player, Retires at Age 25 – NBC Connecticut
Iga Świątek seals world No. 1 spot, becoming first Pole to top tennis rankings | Notes From Poland
Djokovic on course in Cincinnati - CNN.com
Roger Federer: Oldest Man to be World Number 1 in Tennis - Global Village Space
Chart: Roger Federer Crowned Oldest No. 1 in Tennis at Age 36 | Statista
Dan Evans on rise to British number one from being unranked in April 2018 - BBC Sport
ATP Rankings 2019: Rafael Nadal No.1 men's player after overtaking Novak Djokovic | London Evening Standard | Evening Standard
List of WTA Number 1 Tennis Players - All World No.1s In History | STEVE G TENNIS
WTA Rankings Update 2019: Barty the new No.1, Venus back in the Top 50
WORLD NO.1 RECORD. Djokovic equals WTA tennis legend - Tennis Tonic - News, Predictions, H2H, Live Scores, stats
Aim to get into top 50 in coming year: India's no 1 singles tennis player Gunneswaran | The News Minute
Swiatek confirmed new women's world No. 1 in latest WTA rankings | Daily Sabah
Novak Djokovic Sets New All-Time Record For Weeks At No. 1 In FedEx ATP Rankings | ATP Tour | Tennis
World No.1 Ashleigh Barty hopes 2020 will be golden year
Naomi Osaka grabs No. 1 women's tennis ranking with Australian Open victory - MarketWatch
List of ATP number 1 ranked singles tennis players - Wikipedia
Nadal is No. 1 in the world forever. Djokovic, Federer not on his level' | Tennis News - Hindustan Times
Future of Men's Tennis in Good Hands, Says World No. 1 Novak Djokovic
Medvedev will become world number one after Djokovic's defeat at Dubai Open
Shintaro Mochizuki becomes world No. 1 for juniors | The Japan Times
Wimbledon 2021: British No 1 Dan Evans expects Grand Slam to be very different this year | Tennis News | Sky Sports
World No.1 Tennis player Novak Djokovic and wife test positive for Coronavirus, will remain in self-isolation for next 14 days
List of WTA number 1 ranked singles tennis players - Wikipedia
Tennis: Naomi Osaka drops from world No. 1
Tennis-World No.1 Djokovic unsure about going to Tokyo Games | Reuters
Medvedev's No. 1 Tennis Ranking Ends Djokovic's Record Reign: Data Viz
