Under Armour, Inc. is an American sports clothing and accessories company. The company is a supplier of sportswear and casual apparel. Under Armour began offering footwear in 2006. Under Armour's global headquarters is located in Baltimore, Maryland.
The Citi Open is a joint professional tennis tournament played on outdoor hard courts, and held annually in late July at the William H.G. FitzGerald Tennis Center in Rock Creek Park, Washington, D.C., United States. The Citi Open is part of the ATP World Tour 500 series on the Association of Tennis Professionals World Tour, and of the WTA International tournaments on the Women's Tennis Association Tour.