In tennis, the 2019 US Open Series was the sixteenth edition of the US Open Series, which comprised a group of hard court tournaments that started on July 22, 2019 in Atlanta and concluded in Winston-Salem on August 25, 2019. This edition consisted of four separate men's tournaments and two women's tournaments, with the Western & Southern Open hosting both a men's and women's event.[1][2] The series was headlined by two ATP Tour Masters 1000 and two WTA Premier 5 events.