#2 Alexander Zverev
Alexander Zverev has been touted as the next big thing in the tennis circuit, just like Dominic Thiem. But the German hasn’t lived up to his billing at the Slams so far; many believe he needs more time to develop the temperament required to excel in the Majors.
Zverev also tends to get a bit erratic during pressure situations. That has cost him many matches against lower-ranked opponents in the early rounds of Slams.
The 22-year-old can certainly play on clay, as evidenced by his Madrid Masters win last year which was followed by a runner-up finish at Rome. He then went on to reach the Roland Garros quarterfinal, his first at a Slam.
Zverev's consistent play from the back of the court coupled with his big serve makes him a tough out on any surface. His backhand is considered to be his main strength, and he can easily switch between crosscourt and down-the-line versions to catch his opponents off-guard.