Cika wannan jumla:
2013 Hopman Cup, kuma yana wasa don Amurka (tare da John Isner), roba ta farko ita ce a kan Afirka ta Kudu. Williams ta doke Chanelle Scheepers kuma, tare da John Isner, sun yi nasara da 'yan Afirka ta Kudu Chanelle Scheepers da Kevin Anderson. A wasan roba na biyu da Amurka ta yi da Faransa, ta lashe duka wasan nata guda biyu kuma a cikin gauraye biyu ta doke Jo-Wilfried Tsonga da Mathilde Johansson. Ta gaba ta fuskanci Anabel Medina Garrigues na Spain kuma ta ci nasara a cikin saiti biyu.