Carlos Alcaraz eased past Serbia's Hamad Medjedovic 6-4 6-4 to reach the Cincinnati Open last 16 on Tuesday, battling the sweltering Ohio heat to notch his tour-leading 50th victory of the season.

The Spanish second seed also secured his 13th consecutive win at an ATP Masters 1000 tournament, converting three of seven break points in a deliberate, slow-paced contest.

Treated for neck pain after the first set, Medjedovic ramped up in the second to shorten rallies, out-hitting Alcaraz 25–16 on winners but committing 38 unforced errors to the Spaniard's 18.

"I know he's a really powerful player," Alcaraz said.

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