FILE - Emma Raducanu, of Britain, holds up the U.S. Open championship trophy after defeating Leylah Fernandez, of Canada, during the women's singles final of the U.S. Open tennis championships on Sept. 11, 2021, in New York. Raducanu was 18 and ranked just 150th when she won last year's U.S. Open. Her title defense will begin Tuesday, Aug. 30, 2022, in a match against Alize Cornet, of France. (AP Photo/Elise Amendola, File)