Carlos Alcaraz won the Cincinnati Open title in a little more than 20 minutes on Monday after top-ranked Jannik Sinner was forced to retire because of illness during the first set.

Jannik Sinner retired from his Cincinnati Open final against young rival Carlos Alcaraz after losing the first five games of the match and struggling with illness.

Jannik Sinner’s preparations for the US Open ended in emotional scenes as he retired from the Cincinnati final after just five games and 23 minutes.

Cincinnati Open volunteer Phil Carver adopted the puppy that Jannik Sinner met after a match. Later, Carver got to meet Sinner at his birthday party.

After Emma Navarro's withdrawal, Jannik Sinner will make his US Open mixed doubles debut alongside one of the most decorated doubles player of the last decade. World no. 1 will join forces with Katerina Siniakova.