Wimbledon 2026: Serena Williams pulls out of doubles with sister Venus because of knee injury BBC Serena Williams (knee) forced to withdraw from Wimbledon doubles ESPN Wimbledon 2026: Serena Williams and Venus Williams added to Saturday's order of play but not allocated a court BBC Serena and Venus Williams withdraw from Wimbledon doubles The New York Times Wimbledon 2026: Tournament director admits giving Serena Williams extra time to recover before Saturday match Yahoo Sports