Isner upset Nikolay Davydenko in the China Open 7-6, 6-4 proves once again that
A huge serve never goes out of style he may not be as fast as Davydenko or Kohlschreiber but when he find his grove he can hold serve and put the racket on most balls. Based on what Isner has done so far, Djokovic can’t afford to take the American lightly . It won`t be an easy task to beat the world number two but the American got much better lately especially his net game. we should expect a good match.
