MELBOURNE Jan 23 Five-times champion Serena Williams was knocked out of the Australian Open by Sloane Stephens in the quarter-finals on Wednesday.
Stephens won the match 3-6 7-5 6-4 after Williams jarred her back in the second set and suffered spasms. The 19-year-old Stephens will now meet Victoria Azarenka in the semi-finals.
(Writing by Greg Stutchbury; Editing by Peter Rutherford)
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