Third seed Venus Williams booked her place in the quarter-finals at Wimbledon on Monday after Serbian 13th seed Ana Ivanovic retired injured in their fourth-round clash.
Venus, chasing her third straight title here and sixth overall, was making a mockery of Ivanovic's former world number one ranking by storming to the first set 6-1 when the Serb called for the trainer in the opening game of the second.
Former French Open champion Ivanovic received treatment to her hip and then held her serve to go 1-0 up in the second before tearfully informing the umpire she could not carry on.
Williams will play Polish 11th seed Agnieszka Radwanska for a place in the semi-finals.