Dayana Yastremska stuns French Open winner Coco Gauff in straight sets in the first round at Wimbledon. Indeed, she has yet to get past the fourth round and now has been sent home in the first round twice in the past three years. Gauff was never quite at her best Tuesday against Yastremska, who had lost all three of their previous matchups and is ranked 42nd. 2 seed Coco Gauff was upset in the first round of Wimbledon on Tuesday. Gauff, by contrast, was 20-3 at that stage, including a loss to Sofia Kenin at Wimbledon in 2023.