World number one Iga Swiatek moved into the last 16 of the Madrid Open with a 6-3 6-2 victory over Bernarda Pera.
The three-time Grand Slam winner, who will defend her French Open crown next month, returned from a rib injury to win her 13th career title in Stuttgart.
She will face China's Qinwen Zheng or Ekaterina Alexandrovsa of Russia in the next round in Madrid.
"I wouldn't say it was easy, every match on the WTA [Tour] is tricky," said Swiatek, who lost her serve to love to go 2-1 down in the opening set.