I really like Gulbis as a player and don't even mind his cocky attitude if that means he's confident. But he shouldn't go and verbally attack other players during press conferences like this, unless he actually has a problem with that player. But even then he should just say it to their faces instead of doing it like this.
You can't say something like "I don't like Novak, he changed because of money and fame, I don't understand people like that" and then act surprised if people find that offensive or provoking. How did he expect people to react?
Whatever, I just hope he gets more competitive in big matches instead of in interviews