A touch of daydreaming left Serena Williams stuttering before completing a 7-6, 6-2 win over Luxembourg's Anne Kremer.
The twice former champion slapped a backhand winner to set up a third round showdown with Russian fifth seed Nadia Petrova.
"I feel excited to go into the match. I'm ready to go," declared Serena, who holds a 5-1 record against Petrova.
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