article_snippet: Serena Williams had withdrawn from the semi-finals of BNP Paribas Open last week with a knee injury but insisted American star fitness was not a concern.
article_snippet: Serena Williams insisted Eugenie Bouchard was not a concern following the knee injury suffered during last week's BNP Paribas Open semi-finals .
highlights_snippet: Serena Williams had withdrawn from BNP Paribas Open last week with a knee injury .
  