Serena Williams takes another step towards winning a calendar Grand Slam as she prepares for her semi-final match in the US Open against Roberta Vinci.
Read full storyAs Serena Williams continues her quest to make history with a calendar grand slam, the next person that could get in her way is Venus Williams as the two sisters face off in the next round of the US Open.
Read full storySerena Williams continues her quest to make history with a calendar grand slam as she prepares to face a fellow American in Bethanie Mattek-Sands in the 2015 US Open.
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