The executive director of the PTPA, founded by Novak Djokovic, Ahmad Nassar, took to X to address the controversy surrounding Jannik Sinner‘s doping scandal.

And just as Djokovic had a couple of hurdles by the names of Roger Federer and Rafael Nadal to deal with, Sinner is not alone among the newest generation of tennis stars. His top rival at this point is Carlos Alcaraz, who has four Slam victories at age 21 — and won all three matches he played against Sinner in 2024.