ATP Rankings July 22, 2013: No changes in rank for top 5 – Rafael Nadal Fans
The Rankings That Changed Tennis | ATP Tour | Tennis
Notable No. 1s In 50 Years Of Pepperstone ATP Rankings (Part 1) | ATP Tour | Tennis
Tennis in Italy - Wikipedia
New Ranking Maps and Charts – Heavy Topspin
Tennis rankings: Everything you need to know
ATP rankings - Wikipedia
List of ATP number 1 ranked singles tennis players - Wikipedia
The history of the ATP rankings - CNBNews
Jimmy Connors: A Serial No. 1 In The FedEx ATP Rankings | ATP Tour | Tennis
Chart: Roger Federer Crowned Oldest No. 1 in Tennis at Age 36 | Statista
Tennis: Men's singles players who have held the ATP Tour No. 1 ranking
ATP TOP10 Players History since 1973 - Ranking by the total number of weeks - Upd. October 8, 2018 - YouTube
August, 23, 1973: The first ATP rankings list was published
ATP Heritage Nastase No 1 FedEx ATP Rankings | ATP Tour | Tennis
August 3, 1973: The Draft – Heavy Topspin
First Among Equals: World No. 1 Record Breakers & Shakers | ATP Tour | Tennis
The day the first ever WTA rankings were released - Tennis Majors
August 27, 1973: The Controversial Sport – Heavy Topspin
History of men's tennis world number 1s : r/tennis
ATP Rankings, Aug 12: Rafael Nadal moves to No. 3 – Rafael Nadal Fans
The Open's Breakthrough of 1973 - The New York Times
1973 Grand Prix (tennis) - Wikipedia
September 8, 1973: Super Saturday – Heavy Topspin
🎾 Best Tennis Player: Who is Tennis GOAT? The History of ATP No.1 since 1973, week by week 🎾 - YouTube
October 23, 1973: A Sort of an End – Heavy Topspin
August 13, 1973: Dream Team, Assemble – Heavy Topspin
