How does Jannik Sinner compare to Djokovic, Nadal and Federer after Italian Open win?

Jannik Sinner, 24, won the Italian Open in Rome on Sunday to become only the second man in history to complete the 'career Golden Masters' — winning all nine ATP Masters 1000 titles. He achieved this feat at a younger age than any other player in history. Sinner now holds four Grand Slam titles and 10 ATP Masters titles before reaching the age of 25.