British number one Johanna Konta began her clay-court campaign with victory over Yulia Putintseva in the first round of the Madrid Open.
The Briton missed Great Britain's Billie Jean King Cup play-off tie against Mexico this month to prepare for the clay-court swing.
She will play either Anastasija Sevastova or Ana Bogdan next.
Australia's world number one Ashleigh Barty claimed her 12th consecutive win on red clay with a 6-2 6-1 victory over Shelby Rogers of America.
However, fourth seed Elina Svitolina squandered six match points as she was stunned by Jil Teichmann of Switzerland.