Swiatek pulls out of Berlin to focus on Wimbledon
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"Due to a recurrent discomfort I am feeling in my shoulder, unfortunately I need to withdraw from Berlin," the 21-year-old wrote on Twitter.
"I will focus on recovery and rest in order to be ready for Wimbledon."
In beating Coco Gauff in straight sets during last Saturday's French Open final, Swiatek extended her winning streak to 35 games, equalling Venus Williams' record for the longest women's run since 2000.
"Grass is always tricky. I actually like the part that I have no expectations there. It's something kind of refreshing," she said.