World No. 1 Victoria Azarenka of Belarus will meet American fourth seed Serena Williams in the women's singles final of the U.S. Open Tennis Championships in New York tonight. In the semi-finals yesterday, while Azarenka defeated Russian Maria Sharapova in three sets, 14-time Grand Slam champion Serena Williams overpowered Italian 10th seed Sara Errani in straight sets 6-1, 6-2.In the Men's Singles semi-finals, also scheduled for today,Serbia's Novak Djokovic takes on Spain's David Ferrer, and Briton Andy Murray faces Tomas Berdych of the Czech Republic.