August 27, 1973: The Controversial Sport – Heavy Topspin
September 8, 1973: Super Saturday – Heavy Topspin
Jimmy Connors: A Serial No. 1 In The FedEx ATP Rankings | ATP Tour | Tennis
August 30, 1973: Think Cool – Heavy Topspin
Bjorn Borg: The Ice Man - ATP Heritage | ATP Tour | Tennis
ATP rankings - Wikipedia
Tennis rankings: Everything you need to know
New Ranking Maps and Charts – Heavy Topspin
Notable No. 1s In 50 Years Of Pepperstone ATP Rankings (Part 1) | ATP Tour | Tennis
August 8, 1973: Countermove – Heavy Topspin
The day the longest set in Davis Cup history was played - Tennis Majors
August, 23, 1973: The first ATP rankings list was published
1973 Grand Prix (tennis) - Wikipedia
The Rankings That Changed Tennis | ATP Tour | Tennis
The men who ruled Tennis - a history of the ATP Ranking No. 1 (1973 - 2022) - YouTube
The Rankings That Changed Tennis | ATP Tour | Tennis
August 3, 1973: The Draft – Heavy Topspin
ATP Heritage Nastase No 1 FedEx ATP Rankings | ATP Tour | Tennis
August 19, 1973: Sometimes on Sunday – Heavy Topspin
Chart: Roger Federer Crowned Oldest No. 1 in Tennis at Age 36 | Statista
ATP Rankings, Aug 12: Rafael Nadal moves to No. 3 – Rafael Nadal Fans
October 23, 1973: A Sort of an End – Heavy Topspin
The day the first ever WTA rankings were released - Tennis Majors
Tennis in Italy - Wikipedia
ATP rankings - Wikipedia
ATP TOP10 Players History since 1973 - Ranking by the total number of weeks - Upd. October 8, 2018 - YouTube
Tennis: Men's singles players who have held the ATP Tour No. 1 ranking
