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MELBOURNE (Reuters) - Serena Williams produced a serving masterclass to end local interest in the women's draw with a 6-4 6-2 demolition of Samantha Stosur in the fourth round of the Australian Open Monday.

The defending champion gave up just two points on serve in the first set and seven in total against the 13th-ranked Australian, who had beaten the American world number one the last time the pair met at Stanford last year.

The top seed also put pressure on Stosur's serve when she needed to, breaking once in the first set and twice in the second to run out an easy winner in a little over an hour.

Williams will now meet either Victoria Azarenka or Vera Zvonareva in the quarter-finals.

(Reporting by Greg Stutchbury; Editing by John O'Brien)