ATP No. 1 Jannik Sinner retired just 23 minutes into the Cincinnati Open men's singles final, allowing Carlos Alcaraz to win the Rookwood Cup.

The latest chapter of the Jannik Sinner-Carlos Alcaraz rivalry took a stunning turn on Monday when world No. 1 Sinner retired in the first set of the Cincinnati Open final due to an unspecified health issue.

The ATP Prize Money Leaders has been updated for another week after the week that was that saw the Cincinnati Open take place in Ohio with Carlos Alcaraz crowned as champion overall ahead of Jannik Sinner who had to withdraw.