Sharapova hits back at Wozniacki: All that matters to me is I'm in fourth round

Maria Sharapova fired back at Caroline Wozniacki over her criticism of the US Open's scheduling.

Wozniacki, who has been one of Sharapova's most outspoken critics since her return from a 15-month doping ban, said it did not set a good example to give the Russian prime-time billing for every match.