Apparently the official UFC rankings panel was not impressed with Nick Diaz's performance at UFC 158. UFC welterweight champion Georges St. Pierre soundly defeated Diaz in the main event of a card that saw fellow welterweights Johny Hendricks and Jake Ellenberger earn big victories, and that caused Diaz to fall sharply in the rankings. He went from the number three challenger position all the way to number six.
Ellenberger was the man that benefited the most, moving up two spots from six to four, while Rory MacDonald moved up from four to thee despite the fact that he pulled out of his UFC 158 bout. Johny Hendricks maintained his hold on the number one contender spot, while Carlos Condit stayed in the number two spot.
You can see the full rankings list here, by the way. If you'd like to see how the three BE rankers (Chris Hall, Steph Daniels, and myself) handled our individual picks, just go to the rankings page and choose each individual from the dropdown menu at the top.
Continuing on, no other division had the rankings change as a direct result of UFC 158, but the panel added a few new members which led to some minor flips. In the lightweight division, Khabib Nurmagomedov and Joe Lauzon flip-flopped in the 9 and 10 slots; and in the middleweight division, Constantinos Philippou and Chael Sonnen moved up a spot (to 5 and 8 respectively), while Luke Rockhold and Ronaldo Souza fell one (to 6 and 9). Alan Belcher also enter the middleweight rankings in the 10 spot, bumping Hector Lombard off the list.
Finally, the women's 135-pound division saw a few changes as more rankers filled out their ballots for the newest division in the standings. Sarah Kaufman moved past Liz Carmouche into the number two challenger spot, while Cat Zingano and Alexis Davis flipped the four and five spots. Julie Kedzie dropped a spot to eight, and the recently-signed Sheila Gaff debuted at 10.