Nick Kyrgios, Jack Sock and Garbine Muguruza will also join the field.
The Slovakian wanted to forget more than the ball girl by the end of her straight-sets loss to Madison Keys.
Former partners reunite for WTA Finals opener vs. Chan sisters.
Madison Keys electrified the crowd in Singapore with this magical forehand pass on Tuesday.
"I know what to do to go for it and just take the game in my hands," says world No. 1.
A new haircut gives former No. 1 dramatic new look.
Taking a break from trimming a deficit, Sveta snipped her hair during the changeover.