"The week‑long tournament (Saturday, July 19–Sunday, July 27) — the only combined men’s and women’s 500‑level tennis tournament in the world — draws more than 70,000 fans each year to the main tournament venue. Held every year since 1969, the pro tournament kicked off a partnership with Abu Dhabi‑based Mubadala Investments in 2023 to create the newly named Mubadala Citi DC Open. This June, D.C. officials announced plans to assume control of the tennis center and modernize the area and facility, which is currently federally owned, and to work in partnership with tournament owner Mark Ein on continued upgrades." - Evan Caplan