American Nick Bollettieri is the world's most famous tennis coach. Top class players, including idols such as Andre Agassi and Maria Sharapova, have been nurtured at his academy in Florida since 1978. We spoke with the coaching legend during the US Open in New York about Porsche Team Germany's players and the arduous route to the top.
Mr Bollettieri, Sabine Lisicki trains with you in Bradenton. What did you say to her after her first round defeat at the US Open?
"I didn't see her after the match. When she comes to the academy to practise then I'll tell her she has to improve her serve. It's something I'm always telling her. She's a great player, one that keeps fighting and never gives up. But without a really good serve, she will struggle. And physically, she simply has to get even better."