<p>World No.1 Serena Williams of the US stormed in to the US Open women's singles semi-finals with a facile 6-3, 6-2 win over Flavia Pennetta of Italy here.<br /><br /></p>.<p>The American tennis star Wednesday moved within two wins from her sixth US Open title. She will play Ekaterina Makarova of Russia in the semis, reports Xinhua.<br /><br />Pennetta was once leading 3-0 in the first set, but Williams won the next six games in a row to claim the first set.<br /><br />Pennetta failed to come back in the second set, allowing Williams to break twice to seal the victory.</p>
<p>World No.1 Serena Williams of the US stormed in to the US Open women's singles semi-finals with a facile 6-3, 6-2 win over Flavia Pennetta of Italy here.<br /><br /></p>.<p>The American tennis star Wednesday moved within two wins from her sixth US Open title. She will play Ekaterina Makarova of Russia in the semis, reports Xinhua.<br /><br />Pennetta was once leading 3-0 in the first set, but Williams won the next six games in a row to claim the first set.<br /><br />Pennetta failed to come back in the second set, allowing Williams to break twice to seal the victory.</p>