The Washington Kastles are a World Team Tennis (WTT) team that plays home matches at Kastles Stadium at Union Market in Washington, D.C.

The team was founded in 2008, making their D.C. debut on Jul 8, 2008.

The controlling owner of WTT, Mark Ein, the Founder, Chairman & CEO of Capitol Investment Corporation 4 (NYSE:CIC, a public acquisition company), also owns the Kastles franchise.
Team marketing partners

  • Sponsors (pre-2021 season)
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Additional Offices / Facilities
  • Kastles Stadium at Union Market
  • 1309 5th St NE
  • Washington, DC 20002

Ownership / Management

Board of Directors

Mark Ein