Question 1: Who are the members of the 'big four' in tennis?
Answer: The 'big four' in tennis consists of Novak Djokovic, Rafael Nadal, Roger Federer, and Andy Murray.
Question 2: What recent announcement did Rafael Nadal make regarding his career?
Answer: Rafael Nadal announced that he will retire from tennis at the end of the season.
Question 3: How many Grand Slam titles has Novak Djokovic won compared to his rivals?
Answer: Novak Djokovic has won 24 Grand Slam titles, while Rafael Nadal has 22, Roger Federer has 18, and Andy Murray has three.
Question 4: How does Djokovic feel about being the only active member of the 'big four'?
Answer: Novak Djokovic expressed that he feels overwhelmed by the news and stated, "Part of me left with them."
Question 5: What impact did the retirements of his rivals have on Djokovic?
Answer: Djokovic indicated that the retirements of Nadal, Federer, and Murray have left a significant emotional impact on him, as they were his biggest rivals for nearly two decades.