It follows former world No1 golfer Rory McIlroy dropping out of the Brazil tournament.
The world number one sang 'Shake it Off' by Taylor Swift at karaoke ahead of the tournament
The Scot is seeded behind the current world number one and title holder Novak Djokovic.
Andy Murray reunited with coach Ivan Lendl earlier this month
Serena Williams lost the French Open 2016 final to Garbine Muguruza.
Serena Williams, who has won 21 Grand Slam titles in her career, earned more than $28m last year.
The 22-year-old Spaniard upset the world number one and defending champion on Philippe-Chatrier Court.
Williams will equal Steffi Graf's record of 22 Grand slam wins with a win over Garbine Muguruza on Saturday.
The 21-time grand slam singles champion overcomes Bertens in straight sets in Paris.
Serena Williams is making her fourth consecutive semi-final appearance at the French Open.
The defending champion is into the last four at Roland Garros for fifth time after three-set win.
Djokovic beat Roberto Bautista Agut in four sets and Williams breezed past Elina Svitolina at Roland Garros.
A torrential thunderstorm and bolt of lightning has left 10 children and one adult injured
Number 20 seed Konta was blown away by Julia Goerges, while Watson fell to Andrea Petkovic at Roland Garros.
Joanna Konta meanwhile drew German Julia Goerges in her first round match.
Martina Navratilova won the French Open twice in her career.
Serena Williams will be looking for her first title of 2016 as she takes on Madison Keys in the final of the Rome Masters 2016
Tennis superstar reveals she got sick after eating some of her dog's dinner the night before a crucial match.
Williams will be in action in the quarter-final of the Rome Masters 2016. Find out where to watch live in UK.
Williams sisters won the Olympic gold at the 2000, 2008 and 2012 games.
Serena Williams is a 21-time Grand Slam champion.
Djokovic bags his second successive Laureus World Sportsman of the Year Award