Novak Djokovic expresses sympathy for his childhood friend Ana Ivanovic, who lost a 5-1 lead as well as five match points in the third set of her 7-6 (4), 3-6, 7-6 (5) loss to Kim Clijsters in Miami.

"She told me she had five match points and 5-1, love-40. I could not believe it," he said. "I felt really sorry for her, because I think she went through a really difficult period in last year and a half, and now she's finally getting the momentum going and finally finding the confidence.

"I think she's finally playing like the old Ana, you know, in 2008 when she was No. 1. This was big opportunity for her, obviously, playing against I think right now the best player in the world, Kim. Being able to get to the match points and then not finish off, you know, it's very unfortunate. But hopefully she can recover from that loss and take the best out of it and continue on playing well."—Matthew Cronin