Fourth-seeded Monica Puig topped Daniela Hantuchova 6-4, 6-4 to advance to the quarterfinals of the Abierto Mexicano Telcel on Wednesday.
Puig, from Puerto Rico, shook off a slow start in the opening set, unable to convert two set points while fighting off two breaks. But a booming ace won the first set, and she cruised in the second.