In the third and final set of his Cincinnati Open quarterfinal match against Andrey Rublev on Friday afternoon, Carlos Alcaraz committed 15 unforced errors and authored three double faults.

And, yet, the second-seeded Spaniard found a way to claim a 6-3, 4-6, 7-5 victory over the ninth-seeded Russian in Mason, Ohio.

"I maintained positive thoughts all the time, even though I lost focus a few times during the second set," Alcaraz said. "Playing someone like Andrey, when you lose focus on two or three points, it (can) cost you the set or almost the match. I just stayed strong mentally and that's what I'm most proud of."

Alcaraz squandered a 5-3 lead in the third set, but then he held his serve and then broke Rublev for the fourth time to set up Saturday's semifinal against either No. 3 Al

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