Novak Djokovic would seem to have a lot of pressure on him as he begins defense of his US Open crown in New York this week.
But the Serbian superstar, currently ranked number two in the world behind Roger Federer, appeared relaxed and playful during a practice session where he received a marriage proposal from a boy.
'Djokovic! Will you marry me?' the boy shouted from the stands as the player was practicing his serves.