The new tournament's first 14 pairs are set, with wild cards for a suite of singles stars — and the defending doubles champions.

Venus Williams, who made a comeback last week after more than a year's hiatus from competitive tennis, will compete alongside Reilly Opelka in mixed doubles at the US Open.Williams won her opening singles and doubles match at the DC Open last week in her first WTA tournament since last year's Miami Open.

Venus Williams' comeback will continue at the U.S. Open, where she received a wild-card entry into the mixed doubles draw.