The German star's next opponent will be Italy's Sara Errani, who defeated Ukraine's Lesia Tsurenko 6-4, 6-3, reports Efe.
In other action on Tuesday, Spain's Carla Suarez Navarro advanced to the second round with an easy 6-2, 6-2 win over Russia's Sofya Zhuk.
Suarez Navarro will play the Czech Republic's Karolina Pliskova, the World No. 5 and third seed, next.
France's Caroline Garcia defeated the Czech Republic's Lucie Safarova 6-3, 7-5 and will face Russia's Ekaterina Makarova in the second round.
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