 Well, seven Americans advanced at Wimbledon's round of 16 over the weekend, the most U.S. athletes since 2004. But fan-favorite Coco Gauff, not one of them. The reigning U.S. Open champion was defeated by fellow American Emma Navarro in straight sets Sunday. Meantime, No. 12 seed Madison Keyes withdrew because of a leg injury as she took on Italian player Jasmine Polini with the third set tied at 5-5.