The WWE is obviously grooming Ryback to be its next big babyface.
All it takes is a look at how strongly "Big Hungry" has been booked to see that the company is going to do anything and everything in its power to ensure that Ryback becomes a star.
But if the WWE wants to make sure that Ryback will succeed and reach the level that company officials want him to, there are certain things that the creative team absolutely cannot do with the man formerly known as Skip Sheffield.
Mainly, the WWE can't book Ryback in a feud or storyline that—much like his current rivalry with CM Punk—is, for whatever reason, just too damn hard to book.
Here are seven rivalries that Ryback has to avoid for the foreseeable future.