MELBOURNE, Australia — The sibling rivalry, at least on the tennis tour, started right here at the Australian Open for the Williams sisters.
It was 1998, and older sister Venus beat younger sister Serena, 7-6 (4), 6-1, in a second-round match that — as intrusive as it felt to watch — surely drew more attention than any second-round match in history between a pair of Australian Open debutantes.