ATP Live Ranking: Roger Federer is 1890 points clear of Rafael Nadal

Tennis - The Spaniard has to win the title at Roland Garros in order to stay in front of the Swiss

Tennis in shock as Roger Federer loses ATP ranking for the first time in 25 YEARS after Wimbledon

Rafael Nadal wins Queens Club title - Tennis Majors

2011 ATP World Tour - Wikipedia

Roger Federer Retiring: Rafael Nadal, Billie Jean King, More React to News - Bloomberg

Roger Federer: Tennis God and man of the people - Sportstar

Tennis Europe News - Issue 129 by Tennis Europe - Issuu

Explainer: How tennis rankings actually get it right

2005 ATP Tour - Wikipedia

ATP ranking of No. 1 players since Federer : r/tennis

Tennis: Djokovic has been winning grandslams and titles in the last couple of years, almost dominating the circuit. But the impossible-to-beat streak, which we saw in Federer, isn't there yet. He is

Roger Federer defeats Stan Wawrinka in five sets to keep alive prospect of Australian Open final against Rafael Nadal

Roger Federer retains title at ATP 500 Basel after defeating Rafael Nadal in the final, Tennis News