The American faces a rematch of her Wimbledon semifinal against world No. 1 Victoria Azarenka after overpowering eighth seed Caroline Wozniacki 6-0 6-3.
World number four Williams has beaten Sharapova, current world number one Victoria Azarenka and two other former world number ones in Caroline Wozniacki and Jelena Jankovic on her way to the title, dropping only 17 games in six matches.