Cincinnati masters r3

Cincinnati Masters R3: Ben Shelton eased into the third round of the Cincinnati Open after Camilo Ugo Carabelli retired early in the second set with a knee injury.

Competing just three days after winning his first ATP Masters 1000 title in Toronto, Shelton was leading 6-3, 3-1 after 64 minutes when the Argentine retired.

Carabelli grasped his knee on the first point of the fourth game of the second set after an awkward movement coming forward into the court. After a medical timeout he could not move freely and retired after completing Shelton’s service game, ATP reports.