While Serena Williams continued to shock the world with her incredible play at the U.S. Open, TV announcers showed celebs who came out to support the G.O.A.T., including Gladys Knight -- the only problem -- broadcasters mistook the "Empress of Soul" for Dionne Warwick!
And, it was just as cringe as it sounds.
Mary Carillo and Chanda Rubin were behind the mic for ESPN ... when during the third game of the first set, two women appeared on screen between points.