Australian Open winner Serena Williams has pulled out of next week's German Open in Berlin, the organisers said on Wednesday.
"Due to a groin injury, which has not completely healed, I am forced to cancel," said the world number 12.
Former French Open winner Anastasia Myskina has also pulled out of the clay-court
tournament due to injury, organisers said. The event is due to be held on May 7-13 in the German capital.