Heavyweight (265)
#1 Junior Dos Santos
#2 Fabricio Werdum
#3 Travis Browne
#4 Andrei Arlovski
#5 Frank Mir
#6 Stipe Miocic
#7 Mark Hunt
#9 Ben Rothwell
#10 Alistair Overeem
#11 Roy Nelson
The following fighters were removed from this division's rankings due to inactivity:
Cain Velasquez on 10/19/2014
Daniel Cormier on 10/19/2014
Josh Barnett on 12/28/2014
Anthony Johnson on 3/23/2014
Dan Henderson on 7/30/2012
Fedor Emelianenko on 6/21/2013
Brock Lesnar on 12/30/2012
Shane Carwin on 6/11/2012
Antonio Rodrigo Nogueira 4/11/2015
Randy Couture on 8/28/2011
Light Heavyweight (205)
#1 Jon Jones
#2 Anthony Johnson
#3 Ryan Bader
#6 Dan Henderson
#7 Alexander Gustafsson
#8 Glover Teixeira
#10 Mauricio Rua
#11 Antonio Rogerio Nogueira +1
The following fighters were removed from this division's rankings due to inactivity:
Vitor Belfort on 11/09/2014
Lyoto Machida on 8/03/2014
Rashad Evans on 11/16/2014
Chael Sonnen on 11/16/2014
Quinton Jackson on 5/17/2015
Anderson Silva on 10/13/2013
Forrest Griffin on 7/07/2013
Middleweight (185)
#1 Chris Weidman
#2 Anderson Silva
#3 Luke Rockhold
#4 Lyoto Machida
#5 Ronaldo Souza
#6 Gegard Mousasi
#7 Yoel Romero
#8 Tim Kennedy
#9 Michael Bisping
#10 Cung Le
#11 Roan Carneiro
#12 Mark Munoz
#13 CB Dollaway
#15 Francis Carmont
The following fighters were removed from this division's rankings due to inactivity:
Chael Sonnen on 7/07/2013
Vitor Belfort on 5/18/2014
Rich Franklin on 11/10/2013
Welterweight (170)
#1 Robbie Lawler
#3 Rory MacDonald
#4 Tyron Woodley
#5 Kelvin Gastelum
#6 Jake Ellenberger
#7 Hector Lombard
#8 Jake Shields
#9 Demian Maia
#10 Dong Hyun Kim
#11 Matt Brown
#12 Ben Askren
#13 Rousimar Palhares
#14 Josh Burkman
#15 Jon Fitch
Georges St. Pierre on 11/16/2014
Carlos Condit on 3/14/2015
Martin Kampmann on 8/28/2014
Nick Diaz on 3/16/2014
Douglas Lima 4/18/2015
Steve Carl on 3/29/2015
Lightweight (155)
#1 Rafael Dos Anjos
#2 Anthony Pettis
#3 Donald Cerrone
#5 Gilbert Melendez
#6 Eddie Alvarez
#7 Shinya Aoki
#8 Myles Jury
#10 Edson Barboza
#11 Bobby Green
#12 Josh Thomson
#13 Nate Diaz
#14 Diego Sanchez
#15 Al Iaquinta
The following fighters were removed from this division's rankings due to inactivity:#14 Diego Sanchez
#15 Al Iaquinta
Khabib Nurmagomedov on 4/19/2015
Frankie Edgar on 8/11/2013
TJ Grant on 5/25/2014
Tatsuya Kawajiri on 7/26/2012
BJ Penn on 8/28/2011
Featherweight (145)
#1 Jose Aldo
#2 Chad Mendes
#3 Ricardo Lamas
#4 Frankie Edgar
#5 Conor McGregor
#6 Max Holloway
#8 Charles Oliveira
#9 Jeremy Stephens
#10 Hacran Dias
#11 Darren Elkins
#12 Dennis Siver
#13 Patricio Freire
#15 Pat Curran
Nik Lentz on 5/10/2015
Yuri Alcantara on 6/23/2013
Kenny Florian on 10/08/2012
Bantamweight (135)
#1 Dominick Cruz
#2 Raphael Assuncao
#3 TJ Dillashaw
#4 Renan Barao
#5 Urijah Faber
#6 Aljamain Sterling
#8 Francisco Rivera
#9 Rob Font
#10 George Roop
#11 Marlon Moraes
#12 Thomas Almeida
#13 Yves Jabouin
#15 Hugo Viana
The following fighters were removed from this division's rankings due to inactivity:
Joseph Benavidez on 8/14/2012
Johnny Eduardo on 5/10/2015
Eddie Wineland on 5/10/2015
Michael McDonald on 12/13/2014
Chris Cariaso on 2/25/2013
Brian Bowles on 5/25/2014
Demetrious Johnson on 10/01/2012
Miguel Torres on 11/03/2013
Will Ribeiro on 12/03/2009
Brad Pickett on 8/17/2014
John Dodson 12/03/2012
Flyweight (125)
#1 Demetrious Johnson
#2 Joseph Benavidez
#3 Ian McCall
#4 Ali Bagautinov
#5 Zach Makovsky
#6 Tim Elliott
#7 Kyoji Horiguchi
#8 Louis Gaudinot
#9 John Lineker
#10 Adriano Moraes
#11 John Dodson
#12 Jussier Da Silva
#13 John Moraga
#14 Dustin Ortiz
#15 Justin Scoggins
The following fighters were removed from this division's rankings due to inactivity:
Yasuhiro Urushitani on 3/14/2015