Today's fourth-round play at the All England Club produced more upsets at the top of the women's seedings but also offered more convincing wins from the champions and title contenders.Second-seeded Jelena Jankovic, hobbled by a knee injury, fell 6-3, 6-2 to Tamarine Tanasugarn. No. 4 Svetlana Kuznetsova lost 6-4, 1-6, 7-5 to 19-year-old Agnieszka Radwanska.
With top-seeded Ana Ivanovic and No. 3 Maria Sharapova eliminated last week, none of the top-four seeded women reached the quarters. It's the first time that's happened at any Grand Slam tournament in the 40-year history of the Open era. Only three of the top 14 seeded women are left, and two of them are Serena and Venus Williams, seeded sixth and seventh.