His manager Eduardo Artaldi revealed that Djokovic chooses his sponsors carefully and believes that it is not all about the money, but there is also something about morale.
“Djokovic wants to make the world a better place to live. He is wanted by many bookmakers and companies that advertise alcohol, but his answays clear\ they can offer e a billion dollars, but have a responsibility as the best tennis player in the world, the message a am sending to millions of people must not be wrong.