If your considering top 10 world class than without any doubt Sherk, Franca, Penn, Hughes, GSP, Diego, Karo, Fitch, Rich, Anderson, Chuck, Tito, Rampage, Cro Cop, Randy, Andrei, Werdum, and Tim are all world class.
I would also put Stevenson, Kos, Burkman, Marquardt, Swick, Okami, and Rashad in the top 10 in there weights but it could be questionable.
But people in the UFC that I consider A class fighters are Sherk, GSP, Hughes, Penn, Anderson, Rich, Chuck, Rampage, Mirko, Randy, and Werdum. Franca, Diego, Karo, Tito, AA, and Tim would be borderline.
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