This is a fight that is actually booked, has been advertised heavily, and should happen at UFC 183 in January. That said, we still need to make sure these two make it to the octagon to actually square off. Nick Diaz is prone to, well, being Nick Diaz. He's open about smoking weed, he tends to skip media duties, and you never known what's going to happen with him. The one caveat to this argument is that he's yet to actually skip out on a fight, so he's got that going for him. And some fantastic boxing and BJJ skills. Anderson Silva, meanwhile, should be there barring any injury during training. This is one of the UFC's biggest match-ups of 2015 and it has loaded the top half of the year with exciting fights after closing out 2014 strong.