Who Can Stop Jon Jones?

The sarcastic answer would of course be "Anyone. All it takes is a lucky shot". That's true, but not very plausible, so for the sake of argument, we will forget the "puncher's chance" scenario. So who can beat him? A lot of people would probably say Rashad Evans can. Rashad has trained with Jones extensively. You would assume Rashad has some insight on how Jones fights, and maybe even some knowledge of what Jones struggles with. I think that is probably true, but one thing that Rashad wouldn't have any knowledge of is how much Jones has improved since they stopped training together. Should Rashad rely on some type of game plan that includes those insights, he would be assuming that Jones is the same fighter that he used to train with. Everyone knows that isn't the case though. Jones has improved by leaps and bounds every time we see him fight. So can Rashad Evans really beat Jon Jones? I don't think so, but I believe he has the best chance. First he has to get through Phil Davis, which I doubt will be a walk-in-the-park.