Dominic Thiem, a two-time French Open finalist, suffered a shock loss in the first round at Roland Garros on Sunday. Zverev was facing a similar fate until the German star turned his fortunes around.
The other Grand Slam events have also warned the player about future sanctions
Roger Federer will get his French Open campaign underway against Denis Istomin on Tuesday. The Swiss ace has played just two tournaments prior to Roland Garros in 2021.
French Open favrourite Rafael Nadal was drawn in the same half as world number one Novak Djokovic. They were also joined in the same half by fellow Big Three rival Roger Federer.
Rafael Nadal and Novak Djokovic will enter the French Open later this month as the favourites, but former world number one Wilander has chalked out a plan for how the younger players can beat them.
Rafael Nadal is looking for a record 14th French Open title at Roland Garros but could face competition from Novak Djokovic and Dominic Thiem according to the Spaniard's coach.
Rafael Nadal and Roger Federer are currently tied on 20 men's singles Grand Slam titles each. The Spaniard is tipped to eclipse the Swiss ace sooner rather than later.
Roger Federer lost to Pablo Andujar in the R16 of the Geneva Open on Tuesday. It was the Swiss ace's first match since March as he continues his comeback from a long-term knee injury.
Roger Federer is preparing for his comeback following a knee injury at the Geneva Open on Tuesday. The Swiss ace will play Pablo Andujar in his first competitive match since January.
Is Novak Djokovic peeved over questions about NextGen rise? backs Big Three members Nadal and Federer
Rafael Nadal beat Novak Djokovic in three sets to win the Italian Open in Rome, making it the first Masters Series title for a player among the Big Three in a year.
Rafael Nadal won his 10th Italian Open title with a three set win over long-time rival Novak Djokovic.
Nadal is gunning for a 10th Italian Open title
Roger Federer has confirmed his participation at the 2021 French Open which will be his third tournament of the year.
Novak Djokovic is hoping to make inroads into Federer and Nadal's 20 Grand Slam title record at the French Open in 2021.
The Big Three - Roger Federer, Rafael Nadal and Novak Djokovic - are yet to win a Masters 1000 title this season with all three being won by players in the younger generation.
Alexander Zverev won his second Mutua Madrid Open title on Sunday, with a three-set win over Italian Matteo Berrettini to move up to fifth in the ATP Race to Turin.
Even this year's recipient of the Lifetime Achievement award, Billie Jean King, was a tennis star.
Rafael Nadal was not at his best as he fought his way to the title at the Barcelona Open which included a three hour 38 minute final against Stefanos Tsitsipas.
Novak Djokovic is among the greatest ever to play the game but the Serbian has failed to get the same amount of fan adulation as fellow greats Roger Federer and Rafael Nadal.
Rafael Nadal continues to compete at the highest level despite many predicting a short career for the Spaniard owing to his aggressive style of play that has seen him suffer multiple injuries over the years.
The Spaniard claimed his 12th Barcelona Open title with an epic three-set win over Stefanos Tsitsipas, who was unbeaten on clay thus far this season.
Rafael Nadal lost in the quarterfinals of the Monte Carlo Masters, which was the Spaniard's second tournament of 2021. He is now preparing for his first match at the Barcelona Open.
Iga Swiatek shocked the tennis world when she beat then world No.1 Simona Halep on her way to the French Open crown in 2020.
Rafael Nadal has not played a competitive match since his loss in the quarterfinals of the 2021 Australian Open to Stefanos Tsitsipas.
The Swiss star has decided to go back to training after only playing two matches since his comeback.
The Swiss star has finally returned to competitive tennis after spending the past year recovering from knee surgery.
Djokovic has just equalled Federer's record of 310 weeks as world number one and is set to break it next week.
Nadal is gunning for a record 21st Grand Slam title.
The mandatory two-week quarantine period is about to come to an end amid mixed sentiments from players.
Andy Murray also tested positive and was unable to fly to Australia along with the other participants.