Serena Williams crushed top seed Maria Sharapova 6-1 6-1 to reach the last eight of the Sony Ericsson Open.
Williams, playing in her first event since beating the world number two in the Australian Open final in January, took just 58 minutes to win in Miami.
Thirteenth seed Williams, a three-time champion in Miami, faces eighth seed Nicole Vaidisova in the quarter-finals.
Sharapova, runner-up at this event in 2005 and 2006, beat Serena's sister Venus in the previous round.
But the Russian, who lost her world number one ranking to Henin last week, was overwhelmed by the younger Williams.
"I know her game pretty well. We've played each other a few times and I like her style," said Williams.
Sharapova admitted that she had been dominated in the match.
"Once she gets up in the set or the match she seems to steamroll," said the 20-year-old.

Sharapova has lost confidence on her serve, and Serena was attacking Maria's forehand and waiting for it to break down.

Serena signaled to the crowd that she is #1, and if she stays healthy, all WTA players no remember that her combination of

athleticism and power are to be feared on the court.   If Serena plays more tournaments, soon the rankings might also show her

 back at #1 too.

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