🌐EnglishEnglishDeutschEspañolFrançaisItalianoNederlandsPolskiTiếng ViệtEntityQ107639401· pop 12· linked from 258 articles2021 Citi OpenSports tournamentWikidata factsImageCiti Open Logo.svgSources (1)en.wikipedia.orgvia Wikidata · CC0Available in 12 languagesEspañolFrançaisDeutschItalianoCatalanCzechNederlandsNorwegianPolskiTiếng ViệtUkrainianConnectionsATP World Tour 500 seriesEntityUnited StatesCountryCategories2021 in American tennis2021 in sports in Washington, D.C.August 2021 sports events in the United StatesJuly 2021 sports events in the United StatesWashington Open (tennis)