Novak Djokovic has withdrawn from his home Belgrade Serbian Open.

The title lifted Djokovic’s win-loss record on the year to 27-0, the best season start by a player since Ivan Lendl began the 1986 year 29-0.

Robin Soderling and Juan Martin Del Potro clash in a heavyweight battle in Estoril while Novak Djokovic will look to extend his win streak to 28 in Belgrade.

Novak Djokovic finally makes his 2011 clay debut tomorrow in Belgrade.

Novak Djokovic says the key to his success has been a change in diet and the elimination of pizza.

“It would feel better if I didn’t have to beat my buddy out there and it was someone else,” Querrey said of his Davis Cup partner. “But it’s still exciting. He’s got the biggest serve in the game so it can be frustrating at times. But you just have to not let it bother you when you get aced and just walk to the other side to be ready for the next point. It’s a game of inches, as they say, and on match point he missed that forehand by a couple of inches.”

Albert Montanes stunned World No. 1 Roger Federer 6-2, 7-6(5) this afternoon at a rainy Estoril Open.

Roger Federer picked up his first clay court win of the year.

“Although this is not one of the biggest tournament I had won, it means the most to me,” Djokovic told the crowd following the final.