Live ATP ranking: Nadal is No.1, 100 points clear of Federer

Tennis - Juan Martin del Potro targets the fourth place with a good run in Miami

Live ATP Rankings: Rafael Nadal is 1500 points clear of Roger Federer

Notable No. 1s In 50 Years Of Pepperstone ATP Rankings (Part 1), ATP Tour

Tennis: Is this the end for tennis' Big Three?

Roger Federer vs Rafael Nadal, Wimbledon 2019 Highlights: Federer beats Nadal to book a date with Djokovic in the final

Respect is the name of the game for world No 1 Rafael Nadal

ATP rankings - Wikipedia

Rafael Nadal and Roger Federer to battle for No. 1 ranking in Cincinnati - Sport360 News

ATP Rankings: Roger Federer out of the top 10, Cameron Norrie into top 20, Andy Murray plunges - Tennis365

Can Nadal be number 1 in 2017? - Quora

Carlos Alcaraz notches up another milestone in fewer matches than Rafael Nadal, Novak Djokovic, Roger Federer

Notable No. 1s In 50 Years Of Pepperstone ATP Rankings (Part 1), ATP Tour

Roger Federer - Wikipedia

Federer Beats Djokovic to Win Fifth Cincinnati Masters 1000 Title - peRFect Tennis

Federer on His Exit and Holding Nadal's Hand: 'It's Maybe a Secret Thank You' - The New York Times

Roger Federer to end tennis career with final match in London