Serbian tennis player Novak Djokovic must be one of the most likeable tennis player on the planet. Not only is he one of the best players in the world, but he is also notoriously good-humored and love his fans. During a practice session ahead of his US Open title defence, a young boy in the crowd shouts 'Will you marry me?' to the number two ranked tennis player. Djokovic then invited the boy on to the court for a few serves. He gave the boy his racket and then attempted to play against him with his hand. He then hug the youngster. It's a sweet intimate moment. Check out the video after the jump....