Anderson Silva is unarguably the greatest fighter in UFC history. He has defeated literally every opponent that has come his way and hasn't lost a fight since January of 2006, where he was disqualified. Even then, Silva had dominated the fight before an illegal kick cost him the victory.
Since then Silva has been on a fast track defeating former champions in Rich Franklin, Dan Henderson and Forrest Griffin. He's beaten other UFC veterans such as Nate Marquardt, Chris Leben, Chael Sonnen and Vitor Belfort.
Not only does Silva defeat his opponents but he dominates them. Since joining the UFC in June of 2006 Silva has only gone to the judge's scorecards two times.
Silva's only competition in the past five years came from Chael Sonnen at UFC 117. Sonnen completely dominated the first four rounds of action before being submitted in Round 5. While Sonnen was the first man to stand toe to toe with Silva, he still came up just short.
Silva has cleared out the middleweight division without a single loss. Many have touched on the possibilities of Silva vs. welterweight champion George St. Pierre. While this fight may be what the fans want, the chances of it actually happening aren't very good.
In order for Silva to be fully tested he needs to bump up a weight class to the light heavyweight division. While Silva has fought light heavyweight contenders in the past, he hasn't consistently fought at that level.
If Silva were to jump to the 205 pound weight class he would have opportunities to fight UFC veterans such as Jon "Bones" Jones, Quinton "Rampage" Jackson, Rashad Evans and Mauricio "Shogun" Rua.
While it is likely that Silva would continue to be successful in the light heavyweight division, we won't know that until we see it. It would only be ideal as Silva has completely dominated the UFC the past five years.
While Silva is already labeled the greatest UFC fighter in the history of the sport, there are some who want to see more. If Silva were to move to the light heavyweight division and dominate his competition he would put away any doubt that he is in fact, the greatest fighter to have ever entered the octagon.