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.

Carlos Alcaraz takes on Alexander Zverev in the semi-finals of the Cincinnati Open, with both men looking to build momentum ahead of the US Open.

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

World number two Carlos Alcaraz battles past Andrey Rublev 6-3 4-6 7-5 to reach the Cincinnati Open semi-finals.

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.