Agnieszka Radwanska of Poland routed Sara Errani 6-0, 6-1 on Wednesday to reach third round at Madrid Open.
By defeating Errani in the second round, the fourth-seeded Polish player ended the Italian's 16-match winning streak.
Errani showed little of the consistent play that carried her to three straight titles this season. She failed to convert any of her eight break points.
Radwanska plays Roberta Vinci next. The Italian beat Yanina Wickmayer of Belgium 6-1, 6-2 in an earlier match.