Carlos Alcaraz won the Cincinnati Open after top seed Jannik Sinner retired while trailing 5-0 in the first set of their final on Monday. The Spanish second seed collected his third Masters 1000 title of the season,

The highly-anticipated final at the Cincinnati Open came to a sad ending on Monday, as World No. 1 Jannik Sinner was forced to retire from the match against No. 2 Carlos Alcaraz while trailing 5-0 due to illness. With the result, Alcaraz wins his third Masters 1000 title of the season and his eighth overall in his storied young career.

Fierce rivals Carlos Alcaraz and Jannik Sinner square off at the men's Cincinnati Open Final today. Find out how to watch for free.