ROME - Jannik Sinner came through the first true test of his comeback from a doping ban with Tuesday's straight-sets win over Francisco Cerundolo, which took the world number one into the Italian Open quarter-finals.
Italian Sinner bested 17th seed Cerundolo 7-6 (7/2), 6-3 in a match which was delayed by a couple of hours due to a torrential downpour to set up a last-eight clash with either Casper Ruud or Jaume Munar.
Cerundolo knocked out Sinner in the last 16 the last time he played here in 2023, but that was before the 23-year-old had became the tournament-winning machine he is today.
Sinner is finding his feet in Rome, his first tournament since the end of a three-month suspension accepted in February from the World Anti-Doping Agency (WADA) following two positive tests for traces of clostebol in March last year.
His true target is the French Open which follows his home event and he showed some signs of rediscovering the form which has won him three Grand Slams and last year's ATP Finals.
"I've gone through a lot mentally, and not only today, so it's really important that I rest psychologically tomorrow, not think about tennis," said Sinner.
"Let's see how well I can manage all this, but I'm pleased."
Sinner had to battle through the first set against spirited Cerundolo but once he prevailed in the tie-break he built up an unassailable lead by winning four games in a row in the second.
The packed centre court stands hailed their hero after he took the win at the fourth time of asking and continue his bid for a first Rome title.
Sinner said he will watch his team AC Milan take on Bologna on Wednesday at the Stadio Olimpico, which is a short walk from the Foro Italico tennis courts.
By then he should know the identity of his quarter-final opponent after the Munar v Ruud encounter was held over due to the rain delay.