 Quarterfinal action in the men's and women's singles began yesterday at Wimbledon. On the men's side, No. 5 seed Danil Medvedev upset the top seed Yannick Sinner in the thrilling five-set match. No. 3 seed Carlos Alcaraz defeated 12-seeded American Tommy Paul in four sets. On the women's side, 19-seeded American Emma Navarro bounced in straight sets by No. 7 seed Jasmine Paolini. Adonavichuk took down Lulu Sun in three sets. Quarterfinals continue today.