Serena and Venus Williams are on track for a sisters’ semifinal at the Australian Open after fourth-round wins.
Venus advanced to the quarterfinals for the seventh time by beating Italy's Francesca Schiavone 3-6, 6-2, 6-1 in the opening match Monday on Rod Laver Arena.
She's a win away from a possible showdown with her younger sibling.
Defending champion Serena had a 6-4, 6-2 win over Australia's Sam Stosur.
Serena, who has won the Australian each odd-numbered year since defeating Venus in the 2003 final, conceded only seven points on serve in the match, including one double-fault in the second set.
"I can't believe it -- Sam beat me last time pretty convincingly, so I knew I had to do real good," Serena Williams said. "I think my serve was pretty good today."
Stosur, seeded 13th, beat Williams in their last match and had match points before losing the match prior to that. On Monday, she didn't get close, and was the last Australian eliminated from the women's draw.