The world No. 1 and the world No. 3 are both in action on Wednesday, as are the Williams sisters.
Rafael Nadal and Coco Gauff are both in action on Tuesday as the first round of the U.S. Open is completed.
The 15-year-old American looks to continue her Wimbledon fairy tale after eliminating Venus Williams.
Roger Federer, Rafael Nadal and Serena Williams begin their campaign at Wimbledon on Tuesday morning.
U.S. Open 2018 matches on Saturday including Maria Sharapova and Novak Djokovic.
She made history as the first world No. 1 to lose this early in the tournament's history.
"I don't usually have much interest in sharing my injuries," Sharapova wrote.
The tennis star thinks Maria Sharapova "might be perceived by the public as nicer."
Research shows top players grunted at a higher pitch in matches they lost.
Murray begins his defense on Monday in London.
The U.S. Tennis Association has to decide if it will give the disgraced tennis star wild card entry.
The Tunisian underdog beat world No.6 Dominika Cibulkova in Roland Garros on Thursday.
The Canadian is a fierce critic of Sharapova, saying the Russian should not have been welcomed back to tennis after her doping ban.
The Russian returned from a doping ban in April.
The Russian was given a wildcard to compete at the Italian Open.
The Canadian had called her Russian opponent a 'cheat.'
Sharapova beat Roberta Vinci upon her return from her doping ban on Wednesday.
The tennis star was sidelined for using the drug after anti-doping authorities blacklisted it.
This is Murray's first Grand Slam as world number one.
Anti-doping has become an arbitrary process, so why not change the rules?
Steven Colvert tested positive for blood-booster EPO in 2014.
Sharapova can return on April 26.
Serena Williams needs one more Slam to equal Steffi Graf's record haul, and Patrick Mouratoglou thinks he can get the tennis star over that line.
The Ministry of Interior will assemble a register of fans, banned from stadiums.