Serena battles for rights in the lights

Top seed and defending champion Serena Williams breezed into the Wimbledon fourth round but vowed to keep fighting for equal rights under the bright lights of the All-England Club.

World No 1 she may be, but the 31-year-old American was slated as the last match on Court One on Saturday.

With two marathon men's matches before her, she saw her third-round clash with 42-year-old Kimiko Date-Krumm suddenly shifted to Centre Court under the roof and the lights.