[1/4] Aug 11, 2023; Toronto, Ontario, Canada; Carlos Alcaraz (ESP) reaches for but misses a shot played by Tommy Paul (USA) (not pictured) during quarter finals play at Sobeys Stadium. Mandatory Credit: Dan Hamilton-USA TODAY SportsAug 11 (Reuters) - Carlos Alcaraz's U.S Open preparations suffered a setback on Friday as the world number one fell to American Tommy Paul 6-3 4-6 6-3 in the quarterfinals of the Canadian Open. For the third consecutive match, the Spaniard got off to a sluggish start on the hard courts in Toronto, falling behind early and double faulting to hand Paul the first set. But Paul took control in the decider, smoking a backhand at the charging Alcaraz that he could not put back in play for a break and pouncing on a poorly executed drop shot from Alcaraz on match point to dismiss the top seed. Reporting by Rory Carroll in Los Angeles; Editing by Ken Ferris and William MallardOur Standards: The Thomson Reuters Trust Principles.

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Persons: Carlos Alcaraz, Tommy Paul, Dan Hamilton, Carlos Alcaraz's, American Tommy Paul, Paul, Alcaraz, Monfils, Alex de Minaur, Daniil Medvedev, Alejandro Davidovich Fokina, Minaur, de Minaur, Mackenzie McDonald, Davidovich Fokina, De, Rory Carroll, Ken Ferris, William Mallard Organizations: Sobeys, Canadian, Thomson Locations: Toronto , Ontario, Canada, USA, Carlos Alcaraz's U.S, American, Toronto, De Minaur, Los Angeles