Struggling Maria Sharapova will have another day to regroup after her rain-halted US Open quarter-final match against French 11th seed Marion Bartoli was postponed until Wednesday by tournament officials. Tuesday\'s third rain delay arrived with Bartoli leading the Russian third seed 4-0 at Arthur Ashe Stadium. With more rain expected for the next few hours, officials decided to delay the conclusion of the Sharapova-Bartoli match, allowing for the start of Andy Roddick\'s men\'s fourth-round match against Argentina\'s Juan Martin Del Potro to start when dry conditions return. Spanish fourth seed David Ferrer leads French 13th seed Richard Gasquet 7-5, 7-6 (7/2), 4-3 in a men\'s fourth-round match also halted by showers.