Heavyweight (265)
#1 Cain Velasquez
#2 Junior Dos Santos
#3 Daniel Cormier
#4 Antonio Silva
#5 Alistair Overeem
#6 Fabricio Werdum
#7 Fedor Emelianenko
#8 Frank Mir
#9 Antonio Rodrigo Nogueira
#10 Josh Barnett
#11 Mark Hunt
The following fighters were removed from this division's rankings due to inactivity:
Dan Henderson on 7/30/2012
Brock Lesnar on 12/30/2012
Shane Carwin on 6/11/2012
Randy Couture on 8/28/2011
Light Heavyweight (205)
#1 Jon Jones
#2 Lyoto Machida
#3 Dan Henderson
#4 Alexander Gustafsson
#5 Mauricio Rua
#6 Ryan Bader
#7 Glover Teixeira
#8 Quinton Jackson
#9 Antonio Rogerio Nogueira
#10 Rashad Evans
#11 Anderson Silva
#12 Forrest Griffin
#13 Phil Davis
Middleweight (185)
#1 Anderson Silva
#2 Chael Sonnen
#3 Cung Le
#4 Rich Franklin
#5 Constantinos Philippou
#6 Tim Boetsch
#7 Yushin Okami
#8 Chris Weidman
#9 Mark Munoz
The following fighters were removed from this division's rankings due to inactivity:
Nate Marquardt on 3/19/2012
Martin Kampmann on 9/06/2009
Demian Maia on 1/28/2013
Welterweight (170)
#1 Georges St Pierre
#2 Johny Hendricks
#3 Martin Kampmann
#4 Jake Ellenberger
#5 Carlos Condit +1
#6 Rory MacDonald +1
#7 Demian Maia +1
#8 Jon Fitch +1
#9 BJ Penn +1
The following fighters were removed from this division's rankings due to inactivity:
Jake Shields on 2/25/2013
Nick Diaz on 2/04/2013
Lightweight (155)
#1 Ben Henderson
#2 Frankie Edgar
#3 Gray Maynard
#4 Gilbert Melendez
#5 Michael Chandler
#6 Eddie Alvarez
#7 Shinya Aoki
#8 Diego Sanchez +4
#9 Clay Guida -1
#10 Anthony Pettis -1
#11 Nate Diaz -1
The following fighters were removed from this division's rankings due to inactivity:
BJ Penn on 8/28/2011
Tatsuya Kawajiri on 7/26/2012
Sean Sherk on 9/25/2011
Kenny Florian on 8/28/2011
Featherweight (145)
#1 Jose Aldo
#2 Chad Mendes
#3 Darren Elkins
#4 Hacran Dias
#5 Yuri Alcantara
#6 Dennis Siver
#7 Nik Lentz
#8 Diego Nunes
#9 Manny Gamburyan
#10 Tatsuya Kawajiri
#11 Michihiro Omigawa
The following fighters were removed from this division's rankings due to inactivity:
Kenny Florian on 10/08/2012
Bantamweight (135)
#1 Renan Barao
#2 Urijah Faber
#3 Michael McDonald
#4 Marlon Moraes
#5 Miguel Torres
#6 Raphael Assuncao
#7 Mike Easton
#8 Eddie Wineland
#9 Brad Pickett
#10 Takeya Mizugaki +1
#11 Hugo Viana +1
#12 Reuben Duran +1
#13 Francisco Rivera +1
#14 Edwin Figueroa +1
The following fighters were removed from this division's rankings due to inactivity:
Dominick Cruz on 10/01/2012
Brian Bowles on 11/19/2012
Joseph Benavidez on 8/14/2012
Demetrious Johnson on 10/01/2012
Will Ribeiro on 12/03/2009
Chris Cariaso on 2/25/2013
Flyweight (125)
#1 Demetrious Johnson
#2 Joseph Benavidez
#3 Ian McCall
#4 Louis Gaudinot
#5 John Lineker
#6 Yasuhiro Urushitani
#7 John Dodson
#8 Jussier Da Silva
#9 Kentaro Watanabe
#10 Nam Jin Jo
