WTA Rankings 2019: Osaka climbs to No.4, Riske back in Top 50
Novak Djokovic tops first 2019 ATP rankings; Rafael Nadal in second place - The Statesman
Ranking the elite men's tennis players going into 2019 - The Johns Hopkins News-Letter
Nadal, Djokovic to Battle for Year-End Top Ranking at Nitto ATP Finals from London - Weeklong Coverage on ESPN TV, ESPN3 - ESPN Press Room U.S.
Rafael Nadal Clinches Year-End No. 1 ATP Ranking For Fifth Time | ATP Tour | Tennis
Chinese tennis teen Zheng Qinwen rockets up to No 41 in WTA rankings, Zhu Lin jumps 20 spots to world No 73 | South China Morning Post
ATP Rankings 2019: Rafael Nadal No.1 men's player after overtaking Novak Djokovic | London Evening Standard | Evening Standard
Rafael Nadal Clinches Year-End No. 1 ATP Ranking For Fifth Time
Chen Headlines ITA Preseason Rankings - Duke University
WTA Rankings 2019 Update: Serena back in the Top 10
Felix Auger-Aliassime Leads All ATP Rankings Movers So Far | ATP Tour | Tennis
ATP Tour Press Release: Five New Names In Year-End Top 10 ATP Rankings | ATP Tour | Tennis
Ranking History of Top 10 Men's Tennis Players (1990-2019) - YouTube
Nick Kyrgios - Wikipedia
Camel doubles team earns national ranking - Campbell University
Tennis: Naomi Osaka returns to WTA world No. 1 ranking
List of WTA number 1 ranked singles tennis players - Wikipedia
Garin ATP Rankings Movers 6 May 2019 | ATP Tour | Tennis
Gunneswaran looks to keep crucial points after ATP revises ranking
Justin Roberts – Top 800 in ATP Singles' Ranking – Bahamas Lawn Tennis Association
How the Math Behind Roger Federer's Clay Season Helps His World Ranking - The New York Times
