World No. 1 Novak Djokovic did a wonderful gesture during the on-court trophy ceremony following the Serbia Open final in Belgrade as he gathered those who played a big part in helping him become an all-time great. Djokovic failed to win Belgrade as he was beaten in three sets by Andrey Rublev but still it was a memorable day for him and everyone who took part in the special ceremony held after the Belgrade final. In early March, Djokovic announced he was splitting from his long-term coach Vajda. Vajda played a major part in making Djokovic a …