2003 ATP Tour - Wikipedia
On June 13th none of Federer, Nadal and Djokovic will be in the top2 positions in the ATP ranking for the first time in 19 years. This was the ranking in 2003
2003, Roddick outlasts El Aynaoui in marathon - Tennis Majors
One-Slam Wonders: Martin Verkerk's 'little bit of joke' run at 2003 French Open - Tennis365
Explaining the U.S. Tennis Slump - The Atlantic
Sabalenka and Djokovic are No. 1 in the rankings. Coco Gauff is No. 3 in singles, No. 1 in doubles - The Daily Reporter - Greenfield Indiana
Andre Agassi: From Rebel To Philosopher | ATP Tour | Tennis
Juan Carlos Ferrero - Wikiwand
On This Day, 2003: Justine Henin rises to No. 1 on the WTA rankings for the first time
List of ATP number 1 ranked singles tennis players - Wikipedia
Former No. 1 Ferrero to retire after Valencia Open
Paradorn Srichaphan: Shining example on the court - Olympic News
The fall and rise of U.S. tennis. Now they need a grand-slam winner - The Athletic
On This Day, 2003: Andy Roddick outlasts Younes El Aynaoui in quarterfinal epic at Australian Open
tbt: Andy Roddick comes of age in first US Open semifinal in 2003
The day Andy Roddick reached the top of the rankings - Tennis Majors
ATP: For the first time since 2003 - none of the "Big 4" in the top two in the world rankings · tennisnet.com
Harsh Computer Evidence of Steady Decline of American Tennis - The New York Times
Zhang Zhizhen becomes the first Chinese man to beat a top-5 player in win over Casper Ruud | TSN
Rafael Nadal and Roger Federer out of top four in world rankings for first time since 2003 - Mirror Online
Roger Federer - Wikipedia
Former No. 1 Roddick to retire after U.S. Open | CNN
2003-04 COLLEGE TENNIS SEASON-NCAA I RANKINGS-FINAL MEN'S DOUBLES
Return Winners: The 2003 men's US Open final
Clijsters hits the top of the WTA rankings for the first time
Looking back at Nadal's Monte Carlo debut in 2003
