Germany’s Alexander Zverev has made a worrying admission about his fitness ahead of the Cincinnati Open semifinal. The 28-year-old is going through a rough season.

The second spot in the 2025 Cincinnati Open men’s singles final is on the line Saturday night, as No. 2 Carlos Alcaraz battles No. 3 Alexander Zverev.

Alexander Zverev battled dizziness and breathlessness in Cincinnati Open semifinals, eventually losing 4-6, 3-6 to Carlos Alcaraz.

The run had to end eventually. After nine straight wins in Masters 1000 play, Ben Shelton fell to Alexander Zverev in Cincinnati.

Less than 24 hours after winning their Cincinnati Open quarterfinal matches Friday, Carlos Alcaraz will face Alexander Zverev in the semifinal. Saturday’s match is set for 6 p.m. ET, with the winner playing in the final Monday. Alcaraz vs. Zverev will air on Tennis Channel, you can stream it on DirecTV (free trial).

Alexander Zverev is through to the Cincinnati Masters semi-final for the fourth time, the third in a row. World no. 3 faced the Canada Masters winner Ben Shelton in the quarter-final and provided a dominant 6-2, 6-2 victory in an hour and 17 minutes.

Alexander Zverev advanced to the quarter-finals of the Cincinnati Masters on Wednesday after Russian opponent Karen Khachanov retired in the second set with the score at 7-5, 3-0 in Zverev's favour. The pair had met just last week in the Toronto Masters semi-finals,