Boris Becker says constant talk of who will succeed the big three annoys Novak Djokovic, especially when they are still winning tournaments.
For years now, speculation over a so-called 'Next Gen' of players upsetting the domination of Rafael Nadal, Roger Federer and Novak Djokovic has been rife throughout tennis.
But despite years of challenges, the big three, who have 58 Grand Slam titles between them, have held firm.
The only other player to have won a major title in the last five years, Dominic Thiem, did so when none of the big three were able to challenge.
However, there have been signs lately that some of the younger players have started to pick up pace.
Daniil Medvedev knocked Rafael Nadal out of the top two rankings, Stefanos Tsitsipas won his first Masters tournament and Alexander Zverev picked up the Madrid Masters title.
However, Eurosport analyst Becker says that while there are some contenders coming through, but its still annoying for the big three to be asked.
"Of course it annoys Novak when he is constantly asked who the successors of Roger, Rafa and him are, although they are - as in Rome - currently still the winners," said Becker.
Of those who could possibly win a maiden major in Paris this year, Becker believes the contenders have made themselves clear.
"Stefano Tsitsipas has played a very consistent season and won another clay court tournament in Geneva at the weekend. He won in Monte-Carlo and was in the semi-finals at the Australian Open - so he has shown absolute world-class performances throughout the year.
"Maybe he was even better than Sascha Zverev. On clay, he is one of the favourites for the French Open.
"He's in a tremendous physical shape, has improved his groundstrokes - especially his backhand. I see him very far ahead."
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