Heavyweight (265)
#1 Cain Velasquez
#2 Junior Dos Santos
#3 Fabricio Werdum
#4 Daniel Cormier
#5 Antonio Silva
#6 Fedor Emelianenko
#7 Frank Mir
#8 Antonio Rodrigo Nogueira
#9 Josh Barnett
#10 Mark Hunt
The following fighters were removed from this division's rankings due to inactivity:
Alistair Overeem on 12/30/2012
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 Alexander Gustafsson
#3 Mauricio Rua
#4 Lyoto Machida
#5 Ryan Bader
#6 Glover Teixeira +6
#7 Quinton Jackson -1
#8 Rashad Evans -1
#9 Anderson Silva -1
#10 Forrest Griffin -1
#11 Phil Davis -1
The following fighters were removed from this division's rankings due to inactivity:
Dan Henderson on 11/19/2012
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 Jake Shields
#6 Carlos Condit
#7 Nick Diaz
#8 Rory MacDonald
#9 Jon Fitch
#10 BJ Penn
Lightweight (155)
#1 Ben Henderson
#2 Frankie Edgar
#3 Gray Maynard
#4 Gilbert Melendez
#5 Michael Chandler
#6 Eddie Alvarez
#7 Shinya Aoki
#8 Clay Guida
#9 Anthony Pettis
#10 Nate Diaz
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
Diego Sanchez on 12/12/2010
Featherweight (145)
#1 Chad Mendes
#2 Darren Elkins
#3 Hacran Dias
#4 Yuri Alcantara
#5 Dennis Siver
#6 Nik Lentz
#7 Diego Nunes
#8 Manny Gamburyan
#9 Tatsuya Kawajiri
#10 Michihiro Omigawa
The following fighters were removed from this division's rankings due to inactivity:
Jose Aldo on 1/14/2012
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 Edwin Figueroa
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
Flyweight (125)
#1 Demetrious Johnson
#2 Ian McCall
#3 Joseph Benavidez
#4 Louis Gaudinot
#5 John Lineker
#6 Yasuhiro Urushitani
#7 John Dodson
#8 Jussier Da Silva
#9 Kentaro Watanabe
#10 Nam Jin Jo
