Serena Williams and Roger Federer have committed to play the Hopman Cup mixed teams event in late December while former Australian Open champion Angelique Kerber and Alexander Zverev will represent Germany.
Frances Tiafoe will be Williams’ partner for the United States, while Belinda Bencic will again represent Switzerland with Federer to defend the title they won in January over Kerber and Zverev in the final.
