Sinner had a straight set victory over Ben Shelton.
Jannik Sinner has maintained his winning run at the ATP Finals tennis with a straight sets victory over Ben Shelton.
The Italian defending champion is already through to the knockout stages of the season-ending tournament in Turin.
It's winner takes all tonight when Alexander Zverev faces Felix Auger Aliassime for a place in the semi-finals.

Friday Morning Sports Update
Suncroft's Sam Prendergast To Start On Saturday Against Australia
Aviva Stadium Confirmed For Seven EURO 2028 Matches
Ireland To Play Australia In Saturday's Autumn Nation Series
Thursday Morning Sports Update
Wolves Appoint Rob Edwards As New Head Coach
Willie Mullins 2024 Winner Ruled Out In The Morgiana Hurdle At Punchestown This Weekend
Republic Of Ireland Defender O'Shea Say's Tomorrow's World Cup Qualifier Is A 'Huge Opportunity'