Venus Williams returned to the final four at Melbourne Park for the first time since 2003, after beating Anastasia Pavlyuchenkova in straight sets on Tuesday.
Serena Williams recovered from a fall on the slick turf to beat Svetlana Kuznetsova and reach the Wimbledon quarterfinals, where big sister Venus also advanced by beating Carla Suarez Navarro.
Novak Djokovic's top half of the Wimbledon draw features seven-time winner Roger Federer.
Angelique Kerber did what most thought she couldn't: beat Serena Williams. Forced to a third set, Kerber held on to win the Aussie Open and deny the world No. 1 a 22nd career Slam title.
Serena Williams played a nearly perfect first set en route to securing a seventh Australian Open final appearance. She will meet No. 7 Angelique Kerber, a straight-sets winner over Johanna Konta.
There is a growing feeling here that the greatest threat to Serena Williams' calendar-year Grand Slam is Victoria Azarenka, who defeated No. 11 seed Angelique Kerber 7-5, 2-6, 6-4 on Saturday.
