Venus Williams has a sibling.
2001 US Open (tennis) . Marat Safin was unsuccessful in his title defence , being defeated in the semifinals by Pete Sampras in a rematch of the 2000 final , while Venus Williams was successful in her title defense , beating her sister Serena in the women 's final . Venus Williams . From the 2000 Wimbledon Championships to the 2001 US Open , Williams won four of the six Grand Slam singles tournaments held . Beginning with the 2002 French Open , they opposed each other in four consecutive Grand Slam singles finals , the first time sisters had so met in the Open Era .