Twenty-three-time Grand Slam champion Serena Williams defeated Dayana Yastremska of Ukraine 6-2, 6-1 to reach the fourth round of Australian Open on Saturday. Yastremska broke down into tears following her defeat and was consoled by Serena, who was heard telling her, "You are so young. You did amazing. Don't cry." Later, Serena said that seeing Yastremska cry broke her heart.