Lauren Davis will play Russian qualifier Anna Blinkova in the next round
Xinyu Wang defeated Magda Linette 6-2, 6-4 on Wednesday
Coco Gauff defeated Ann Li 6-2, 7-6 (2) to reach the second round in Berlin in her first match since reaching the French Open final
Two of the top 6 women's seeds were knocked out of the Australian Open on Thursday but second seed Sabalenka survived a three-set battle
The British No 1 lost in Linz and perhaps more worryingly picked up an apparent leg injury in the latter half of the final set