The Mubadala Citi DC Open tournament, played in Washington D.C., is one of the world’s premier tennis events and benefits the Washington Tennis & Education Foundation (WTEF). The tournament was founded in 1969 by Donald Dell, John Harris and Arthur Ashe in its current location in Rock Creek Park with a vision of making pro tennis accessible for all athletes and fans in the Washington community. Beginning in 2019, venture capitalist, entrepreneur, and DC native Mark Ein’s organization, MDE Tennis, began managing and operating the tournament under an agreement with WTEF. The organization provides underserved children in the D.C. area with a safe environment to learn critical life skills both on and off the courts through academic and athletic enrichment. The Mubadala Citi DC Open tennis tournament is the only combined ATP and WTA 500 level event in the world on the tour calendar and one of only five combined ATP/WTA tour events in the United States. After 53 years, it is also the longest-running professional tennis event at the same site in the United States. Follow us on Facebook, Instagram and Twitter