Li Na will be looking to replicate what only six players have previously been able to achieve when she takes on Serena Williams in the 2010 Australian Open semi-finals. And that is to defeat both Williams sisters at the same tournament, having won against Venus in the quarterfinals.
The players who have successfully completed the double in the past are: Arantxa Sanchesz-Vicario (Sydney, 1998); Steffi Graf (Sydney, 1999); Martina Hingis (Australian Open, 2001); Kim Clijsters (Tour Championships, 2002 and US Open, 2009); Lindsay Davenport (Los Angeles, 2004); and Justine Henin (US Open, 2007).
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