Shelby Rogers delivered 10 aces and won 76.5 percent of her first-serve points on Thursday while rolling to a 6–1, 6–3 upset of top-seeded Maria Sakkari of Greece in the second round of the Mubadala Silicon Valley Classic at San Jose, Calif.Rogers had 16 winners and eight unforced errors and needed just 72 minutes to finish off Sakkari.
Rogers will face fellow American Amanda Anisimova in Friday’s quarterfinals.
