Quarterfinals bound 💪 San Diego’s Katherine Hui and partner Eleana Yu claimed victory 6-4, 7-6(4)! Tune into court 9 at 10:00 A.M. PST to cheer her on. Let’s go #TeamSoCal 🌴🎾 📸: Garrett Ellwood/USTA #GrandSlam #USOpen #JuniorUSOpen