I think it was a good match," Sinner said in his on-court interview.
Sinner cruised from there on, using both serve and forehand to devastating effect as he controlled rallies from the baseline and frustrated Schwartzman, winning five straight games as errors crept into the Argentine's game.
"I tried to return as many balls as I could and I tried to play my game.
Moving him around is not easy because he is so fast, so I tried to overpower him a little bit.
"Hopefully I can play some good tennis here, play point-by-point and then we'll see where I can finish."
Persons:
Argentina's Diego Schwartzman, Toby Melville LONDON, Diego Schwartzman, Schwartzman's, Francisco Cerundolo, Schwartzman, Sinner, Aleksandar Vukic, Frenchman Quentin Halys, Aadi Nair, Toby Davis
Organizations:
Lawn Tennis, Croquet Club, Argentina's Diego Schwartzman REUTERS, Thomson
Locations:
London, Britain, Argentine, Bengaluru