Johny Hendricks, three top 5 welterweights later and shafted once again. They probably feel that Nick is a more favorable match-up for GSP and want to get this fight out the way seeing that this is a marketable rivalry that brings a lot more money to the table than a Hendricks/GSP match up that GSP has a real shot at losing. In any case, I feel bad for Hendricks. There's not a single contender in the UFC that deserves and has rightfully earned a title shot more than this guy.
This pretty much sums it up. But it's a fun fight nonetheless.
"Let them see that their words can cut you, and you'll never be free of the mockery. If they want to give you a name, take it, make it your own. Then they can't hurt you with it anymore." - Tyrion Lannister