Venus Williams sets sights on No . 1 ranking for the first time in 10 years . After the match , Serena spoke of fondness for the Pole , whose older sister Agnieszka is top seed for the hard-court tournament and reached the last eight with a three-set win over American teenager Sloane Stephens . ` - The U.S. Open is held at Flushing Meadows, New York. Younger sister Serena also into the last eight after beating Urszula Radwanska . Defending U.S. Open champion Sam Stosur and Czech Petra Kvitova also advance .
Venus Williams sets sights on No . 1 ranking for the first time in 10 years . - The U.S. Open is held at Flushing Meadows, New York. Younger sister Serena also into the last eight after beating Urszula Radwanska . Defending U.S. Open champion Sam Stosur and Czech Petra Kvitova also advance .