Sharapova added to lineup for Arthur Ashe Kids' Day

Maria Sharapova has been added to the list of participants in this year's Arthur Ashe Kids' Day, which precedes the U.S. Open. This year's event will take place on Saturday, August 29, and will also feature Serena Williams, Roger Federer, Andy Roddick, Will Ferrell, "American Idol" winner Jordin Sparks, and others.