Dolgo gave Djokovic hell at US Open one year, early in his career. But never quite lived up to the great expectations he inspired. Similarly parallel to his tennis hero, Marcelo Rios.I remember him especially for losing to Djokovic in Monte Carlo 2012 when Djokovic recieved the information that his grandfather passed away right before the match. Open Era No. 1 came out and went out with tears but still managed to beat Dolgopolov.