Why isn't Diego Sanchez appearing on any UFC rankings?

The reason Sanchez isn't listed in the welterweights top 15 is not because he was beat by two of the top ten, it is because he has dropped down to the lightweight division. Granted he has posted two very impressive wins in a highly stacked division but with the likes of BJ Penn, Sean Sherk, Kenny Florian, Tyson Griffin, Clay Guida, Hermes Franca, Frankie Edgar and others who have been building this division the last couple of years, it's not quite fair to post Diego in the top ten with only two fights under his belt. That's like giving someone a title shot after only three professional fights and one of those was a loss, wait, that did happen.