WATCH the Vienna Open LIVE in Australia on beIN SPORTS | Subscribe here and take advantage of our 7-day FREE TRIAL

Sinner, who lost to Bublik in Halle in June, but has since been the dominant force in their entertaining rivalry and now leads Bublik 6-2 in their head-to-head.

"It is a tough, a tough match-up. I am very happy," Sinner said.

"I tried to return as many balls as possible, I felt he was serving great today. I am happy I had some chances. Early in the first set I had some but I could not use them but I am happy I was able to stay there mentally. He is a very dangerous player but I tried to stay as solid as possible, so I am very happy."

Sinner lifted the trophy in Vienna in 2023 and has a 15-4 record at the event, and most would expect him to improve that further against De Minaur, with the Australian having never managed a win against the Italian star in 11 previous meetings.

However, De Minaur did beat another Italian on his way to the last four, defeating Matteo Berrettini 6-1 7-6 (7-4) for the Australian's 53rd win of the ATP Tour season.