Novak Djokovic danced to celebrate his daughter's birthday after defeating Taylor Fritz in the US Open quarter-finals. The 38-year-old called the victory "a big present" for Tara, who turned eight on Tuesday. "It's from 'KPop Demon Hunters'. Soda Pop is the name of the song," he said, adding, "Hopefully, I'll make her smile when she wakes up in the morning."