 On the green grass at Wimbledon, two-seed Coco Gauff upset by fellow American Emma Navarro in straight sets. Gauff is yet to make it to the quarters at the All-England Club. On the men's side, defending Wimbledon champion Carlos Alcaraz, world No. 1 Yannick Sinner, both winners. Sinner taking out upstart American Ben Shelton. American Tommy Paul, though, a straight-set win. He is into the quarterfinals, but up next, he's got to face Carlos Alcaraz. More action on Monday. I'm Frank Hanrahan, WTOP Sports.