Jannik Sinner passed a big test in his return from a three-month doping ban, beating accomplished clay-court player Francisco Cerundolo on Tuesday to reach the Italian Open quarterfinals.

The world No. 1 was rusty on his first match back after three months away. His Italian Open draw means he cannot afford to be so for long.

Top-ranked Jannik Sinner overcame a brief lapse during the first set of a 6-4, 6-2 victory over Dutch qualifier Jesper De Jong in his second match back on tour in front of his home crowd at the Italia

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 No. 1 into the Italian Open quarterfinals.