Copenhagen: World number one Caroline Wozniacki has dropped her father Piotr as coach in a dramatic attempt to halt a worrying slump in form just 11 days before the start of the US Open.
"I am no longer her coach. Who will be the new one? I promised I wouldn't say," Piotr Wozniacki told the Ekstra Bladet newspaper.
The pair agreed to make the change, he said, after Wozniacki's third consective fourth-round exit at Wimbledon earlier this year.