Italian Sinner has warned that Alex de Minaur “doesn’t have a lot to lose” in their semi-final.

Sinner advanced to the last four without dropping a set or a service game, showcasing his clinical touch against Shelton by converting two of his three break-point opportunities in the first set and sealing the win in the tie-break with his second match point.

Efficient on serve throughout the match, he shut down Shelton’s only break point – he has now saved all eight he has faced in Turin – and gave up just seven points in six second-set service games.

The 24-year-old, targeting a third consecutive appearance in the final at the end-of-season showpiece, boasts a 12-0 record against seventh seeded De Minaur but is unwilling to underestimate the Australian, who upset Taylor Fritz to clinch second place in the Jimmy Connors Group.

“I’m very happy for [De Minaur],” Sinner said. “Props to him for coming back with that performance [against Fritz]. It’s one of the best matches I’ve seen him play.

“I have to be very careful – he doesn’t have a lot to lose. It’s going to be very difficult.”

In the doubles, a 7-6 (7-5) 6-2 victory for Henry Patten and his Finnish partner Harri Heliovaara over Marcelo Arevalo and Mate Pavic means there will be five British players in the semi-finals – the most from a single nation since 1992.

British duo Joe Salisbury and Neal Skupski, who had already qualified, maintained their 100% record with a 7-5 6-3 win against Christian Harrison and Evan King and will face fellow Britons and year-end number ones Julian Cash and Lloyd Glasspool in the last four.