Second week of tournament has its highs and lows for players
Serena Williams defeated Francesca Schiavone of Italy to continue her quest to the top.
In an upset, Tommy Robredo of Spain beat Roger Federer.
Defending champ Andy Murray won against Leonardo Mayer of Argentina.
Serena Williams, left, and her sister, Venus, won their doubles match against Raquel Kops-Jones and Abigail Spears of the United States.
Tennis fans Robert Maino, left, and Jon White of Queens enjoy a day at the US Open with their tennis ball hats.
Rafael Nadal of Spain beat Ryan Harrison of the USA.