United States' Serena Williams celebrates after defeating her sister Venus in the women's singles final at the Australian Open tennis championships in Melbourne, Australia, Saturday, Jan. 28, 2017. (Jack Thomas/Pool Photo via AP)
United States' Serena Williams celebrates after defeating her sister Venus in the women's singles final at the Australian Open tennis championships in Melbourne, Australia, Saturday, Jan. 28, 2017. (Jack Thomas/Pool Photo via AP) Jack Thomas AP
United States' Serena Williams celebrates after defeating her sister Venus in the women's singles final at the Australian Open tennis championships in Melbourne, Australia, Saturday, Jan. 28, 2017. (Jack Thomas/Pool Photo via AP) Jack Thomas AP