The odds were supposed to be shorter on Djokovic last time around, to be honest. I made a mistake calculating. There's no mistake now, however. Betting firms have really large profit margins here, so I could lengthen a bit.
I strongly disagree with you on the current odds. Not that I am going to place another bet on Djokovic, so the odds don't matter that much to me. Nadal is 1400 points ahead of Nole in the race and has a really easy path to increase that by a further 800. Nole at evens just does not seem right. I haven't checked, but wouldn't be surprised is some bookies already have Nadal as the favourite(or at least very close odds on the two).