What happened: The tournament announced the entry Wednesday. It follows the sisters’ first-round Cincinnati appearance earlier this month.
Why it matters: Serena now has a second New York event after competing in mixed doubles with Carlos Alcaraz. Venus also holds a singles main-draw wild card.
By the numbers: Their US Open women’s doubles titles came in 1999 and 2009; they also have three Olympic doubles gold medals.
What to watch: The women’s doubles draw will determine their first-round opponent and path through New York.