Japan's Naomi Osaka, left, is congratulated by United States' Serena Williams after winning their semifinal match at the Australian Open tennis championship in Melbourne,...

United States' Jennifer Brady celebrates after defeating Karolina Muchova of the Czech Republic in their semifinal match at the Australian Open tennis championship in Mel...

United States' Serena Williams reacts during a press conference following her semifinal loss to Japan's Naomi Osaka at the Australian Open tennis championship in Melbourn...