It’s time for the 2021 US Open quarterfinals. Emma Raducan, Belinda Bencic, Karolina Pliskova, Maria Sakkari, Elina Svitolina, Leylah Fernandez, Barbora Krejcikova and Aryna Sabalenka remain. Who will make the finals four? Don’t miss a moment of the US Open!…