Defending champion Iga Swiatek advanced to the quarterfinals of the Doha Open with a 6-7 (1), 6-4, 6-4 win over Czech Linda Noskova on Wednesday. The second-seeded Swiatek will next play Elena Rybakina, who beat Rebecca Sramkova 7-6 (1), 6-2. Sixth-seeded Jessica Pegula also reached the quarterfinals with a 6-3, 7-5 victory over Daria Kasatkina.