HUGE: @serenawilliams and @rogerfederer are set for an epic showdown. HOPMAN CUP | DECEMBER 29 on @Channel9 and… twitter.com/i/web/status/1…

HUGE: @serenawilliams and @rogerfederer are set for an epic showdown.HOPMAN CUP | DECEMBER 29 on @Channel9 and… twitter.com/i/web/status/1…