San Francisco Frontiers - Sinner cruises past Zverev and into last four of ATP Finals

World number one Sinner is bidding to retain his title at the prestigious end-of-season tournament and he cruised into the semi-finals in front of a delighted crowd in Turin.

The 24-year-old was not at his best and struggled with a hand problem at the start of the match but still had more than enough to see off Zverev for the fifth straight time.

Zverev hasn't beaten Sinner since the 2023 US Open, being destroyed by the Italian in the semi-finals of the recent Paris Masters, and again the German couldn't handle the four-time Grand Slam champion.

Sinner was brutal on his serve, rattling in 12 aces, and once he took the first set with his third break point of game 10 he never looked back.

Zverev needed to win in straight sets to book his place in the semis but will now have to beat Felix Auger-Aliassime, a 4-6, 7-6 (9/7), 7-5 winner over Ben Shelton, in his final group match in order to progress.

But he cut an irritated figure on court, frustrated by his inability to capitalise on any of his break points, a series of unforced forehand errors and at one point by a flashing advertising sign.

Sinner meanwhile will take on Shelton aiming to top the group and set up a clash with whoever finishes second in the Jimmy Connors Group which is currently led by his great rival Carlos Alcaraz.

- Aggressive Auger-Aliassime -

Canada's Auger-Aliassime won just his second ever match at the season-ending tournament with a battling display, coming back from a poor start to boost his hopes of reaching the semi-finals.

"I think I played great, very aggressive, hitting very good balls on backhand and forehand, so I went for it and in the end it paid off," said Auger-Aliassime to Sky Sport.

Auger-Aliassime's imposing service game, which included nine aces, eventually broke down Shelton whose erratic play cost him a debut win at the Finals.

The 25-year-old showed no signs of having the calf problem which affected his opening loss to Sinner, and he will face Zverev on Friday with a chance of making the knockout stage.

"I think there's a bit of a learning curve everywhere you go. Different tournament, different atmosphere, different format that I never played in, obviously playing the best players in the world," Shelton told reporters.

Shelton looked to be in control when he won the first set at the first opportunity, breaking Auger-Aliassime's serve for the second time just after having his initial break cancelled out.

Auger-Aliassime won a tight second set which went with serve until the tie-break, when Shelton had to save three set points before eventually conceding the match lead with a double-fault.

And he won the match at the third time of asking at the end of another bruising set, breaking Shelton and getting a win on the board.

S.Hall--SFF