Carlos Alcaraz committed four double faults against a struggling Alexander Zverev during their match in the Cincinnati Masters semifinal on

Carlos Alcaraz knows that he risked more than expected against Andrey Rublev in the quarterfinals of the 'Cincinnati Open', but he overcame the difficulties and qualified for the semifinals in Ohio also thanks to some gifts from the Russian player in the decisive moment of the challenge.

Ten seeded players were in action during the Cincinnati Open quarterfinals Aug. 15. Here's how the action unfolded in Mason.

Check out our betting preview with odds, picks, and predictions for Friday’s match between Andrey Rublev and Carlos Alcaraz at ATP Cincinnati.

Carlos Alcaraz advanced to the quarterfinals of the Cincinnati Open, matching a historic milestone previously achieved only by Rafael Nadal and Pete Sampras.

Carlos Alcaraz's Cincinnati Open quarter-final match against Andrey Rublev was halted for an emergency in the stands. The Spaniard held to lead 1-0 in the deciding set when chair umpire Mohamed Lahyani realised someone in the crowd was struggling, and raced over to bring them water and an umbrella.

Carlos served well in the opener and landed many service winners. He secured an early break at love in the second game and created more chances at 4-1. The Spaniard converted the fourth break point and extended the gap.

After defeating Andrey Rublev, Carlos Alcaraz advanced to the Cincinnati Open semifinals and joined an exclusive group alongside Rafael Nadal following a historic achievement.