Williams sisters won the doubles which and maintain it.

Retained sisters Serena and Venus Williams won the women's doubles at the Australian Open, the first grand slam tennis tournament, after winning over Cara Black of Zimbabwe and the U.S. to easily remove the Huber 6-4, 6-3 Friday in the final.
The title is atheist ten of Williams sisters in the women's doubles Grand Slam, and the third in a row after Wimbledon and Flushing Meadows last season.
The Williams sisters occupy third place in terms of women's doubles titles in grand slam carries, among Moatntahma Martina Navratilova and Pam Shriver, the record (21 titles) in front of the Puerto Rican Gigi Fernandez and Natasha Belarusian Zverev (14 titles).
And made Serena and Venus on the winning 117 out of 135 games in the women's doubles, and filed an heavy penalty to 17 titles, including Zahbita Sydney 2000 and Beijing 2008, they did not note any Tkhosra final Grand Slam tournaments.
Serena will be the opportunity to keep her title to champion women's singles final on Saturday when clashing with Belgian Justine Henin, raising its total to 12 titles large (Australian 2003, 2005, 2007 and 2009 and the French Open and Wimbledon in 2002 English 2002 and 2003 and 2009, Flushing Meadows U.S. 1999, 2002 and 2008 and lost three finals at Wimbledon 2008 and 2004, Flushing Meadows 2000).