U.S. Open 2015 Day 9SI Staff|Share on FacebookShare on XAdd us as a preferred sourceU.S. Open 2015 Day 9U.S. Open 2015 Day 9 Kristina MladenovicAlex Goodlett/Getty Images Roberta Vinci Clive Brunskill/Getty Images Roberta VinciMatthew Stockman/Getty Images Kristina MladenovicMatthew Stockman/Getty Images Roberta Vinci Clive Brunskill/Getty Images Marin CilicJEWEL SAMAD/AFP/Getty Images Marin Cilic JEWEL SAMAD/AFP/Getty Images Jo-Wilfried TsongaAl Bello/Getty Images Marin Cilic JEWEL SAMAD/AFP/Getty Images Jo-Wilfried Tsonga JEWEL SAMAD/AFP/Getty Images Serena WilliamsAl Bello/Getty Images Venus and Serena WilliamsAl Bello/Getty Images Venus WilliamsClive Brunskill/Getty Images Serena Williams Al Bello/Getty Images Venus WilliamsAlex Goodlett/Getty Images Serena WilliamsAlex Goodlett/Getty Images Serena and Venus WilliamsMatthew Stockman/Getty ImagesAdd us as a preferred source on GoogleFollowPublished Sep 8, 2015 | Modified Sep 8, 2015SI STAFFShare on FacebookShare on XHome/Tennis