The NHL’s Washington Capitals are owned and operated by Monumental Sports & Entertainment, which is one of the largest integr ... ated sports and entertainment companies in the country with one of the most diverse partnership groups in all of sports. The company also owns and operates the NBA’s Washington Wizards, WNBA’s Washington Mystics and Capital One Arena, the premier sports and entertainment venue in Washington, D.C. Monumental Sports & Entertainment also oversees the management of Kettler Capitals Iceplex– the training facility for the Washington Capitals and EagleBank Arena at George Mason University. read more