Football star Kaka said that Lionel Messi deserves the title of the best player. Though Kaka is a front runner for the title, Kaka feels that Messi is a player who makes a difference. “I would vote for him for all he has done, leading Barcelona to all these titles.” said Kaka before the World Cup qualifier between Brazil and Argentina.But Kaka acknowledges that he has been working constantly for retaining the title of the best player.