Diaz is coming off a one-year suspension (which expires in February 2013) after testing positive for marijuana metabolites following his last fight against Carlos Condit.
While some fans are wondering why GSP is going to fight Diaz instead of somebody who is riding a winning streak, such as Johny Hendricks, this matchup appears to be more compelling.
Many experts believe GSP is going to be able to pull out another decision victory (10 of his 18 wins in the UFC have come by decision) over Diaz. Considering the welterweight champion hasn't lost a fight since 2007 and only two in his entire 11-year career, it's hard to argue against them.
That's exactly what we're doing here. I firmly believe Nick Diaz is going to beat GSP and become the next welterweight champion.
Here are three reasons why.