Defending champion Jannik Sinner secured a semi-final spot at the ATP Finals in Turin with a routine 6-4 6-3 victory over Alexander Zverev on Wednesday.

As a result, Sinner extended his winning streak on indoor hard courts to 28 matches - stretching back to his loss to Novak Djokovic in the final of this event two years ago.

It was also Sinner's fifth-straight victory over third seed Zverev - a run that includes this year's Australian Open final and recent meetings in Vienna and Paris.

The Italian still has a chance of reclaiming the world No 1 ranking to close out the year, but needs to succesfully defend his title and hope that Carlos Alcaraz doesn't win another match.

Sinner leads the Bjorn Borg Group with two wins from two, while Zverev and Felix Auger-Aliassime have one win each a

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