Serena Williams eased into Friday's third-round encounter against her sister with a 6-2, 6-2 win over German world No 101 Carina Witthoeft. EPA
Serena Williams eased into Friday's third-round encounter against her sister with a 6-2, 6-2 win over German world No 101 Carina Witthoeft. EPA

US Open: Serena, Venus to clash for 30th time as Cornet shrugs off US Open sexism storm