Sinner is the dominant force on the indoor courts, with this his 27th victory in a row above.
His serve was especially good in a high-quality first set. He won 24 of 27 first serve points, didn’t lose a single point on his first serve and didn’t face a break point.
Auger-Alongime dropped a stroke in her run to the US Open Final and hit the off, rushing shot-for-shot.
But the injury at 6-5 30-0 up had an immediate effect, with AUGER-ALASSIME struggling to move and send his shots as he tried to work his way out of trouble.
The sinner, who was taken to wake up only once in 10 service games, did not allow and sealed the victory with an ace before heading home.
He and rival Alcaraz are in contention for the year’s number one ranking in Turin.
The sinner must defend his title – and the hope that Alcaraz lost a match in the group and did not reach the final – to maintain the top ranking.
Alcaraz, in the opposing group of sinners, started his campaign with a straight sets win over Alex de Minaur on Sunday.