Are the First Years of the 'Next4' Anything Like the Big4?

Are the First Years of the 'Next4' Anything Like the Big4?

We are likely to look back at the end of the 2019 season as the start of a generational breakthrough in men’s tennis. With four of the most impressive 23-and-unders on tour—Daniil Medvedev, Stefanos Tsitsipas, Alexander Zverev, and Matteo Berrettini—reaching the semifinals and taking out 2 of the Big 4 on their way there, it is feeling like we are on the brink of a ‘Big 4’ takeover by the ‘Next 4’. What can the early career trajectories of the Big 4 tell us about which if any of these young stars might follow their footsteps?