taly's Jannik Sinner beat Felix Auger-Aliassime 7-5 6-1 in his opening match at the ATP Finals on Monday in Turin.
    Canadian Auger-Aliassime's hopes of springing a surprise on the defending champion were hit by him having trouble with a calf problem.
    "It was a very tough match until 6-5," said Sinner, who also beat Auger-Aliassime in the final of the Paris Masters at the start of this month.
    "I had some chances to break.

He served very well, only once I missed a return, but it can happen.
    "He played some very aggressive tennis, so I'm happy to overcome a very tough test today.
    "Obviously winning the first match is very important in this competition and this format.

I'm very happy.
    "I hope it (the injury) is nothing too serious. I wish him obviously a very speedy recovery and hopefully he is back to 100% physically." Sinner's compatriot Lorenzo Musetti lost his first match 6-3 6-4 to American Taylor Fritz.
   

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