Nothing has changed in tennis anti-doping since Jannik Sinner and Iga Świątek's cases, but players are more paranoid than ever before

Top-ranked Jannik Sinner passed a big test in his return from a three-month doping ban by beating accomplished clay-court player Francisco Cerundolo 7-6 (2), 6-3 to reach the Italian Open quarterfinals.

This was Jannik Sinner's 50th victory as the ATP's top-ranked player, in just his 53rd outing as the world number one. Since the ATP rankings were first published in 1973, that is the joint-fewest matches required to reach 50 wins as the world number one,

I need this,” the world No. 1 said of the tough run Francisco Cerundolo gave him in Rome. “Today I felt I raised my level.”

Jannik has kept Zverev and Carlos Alcaraz behind despite missing three months of action and four Masters 1000 events. Thus, he will celebrate a notable milestone next week.

Jannik Sinner overcame his toughest challenge so far at the Rome Open, defeating an inspired Francisco Cerundolo 7-6(2), 6-3. This will be Sinner's second appearance in the Italian Open quarterfinals,