Jannik Sinner advances to the second round of the Australian Open.

His opponent Gaston retired when the world number 2 was leading two sets 6-2, 6-1.

"I saw he wasn't serving hard in the second set," Sinner explained. He added: "I didn't want to win like this. Gaston has great talent and a great touch. I knew he'd play like this at the start. But I'm happy with the match and the way I played."

(Unioneonline)

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