Heavyweight (265)
#1 Stipe Miocic 
#2 Alistair Overeem
#4 Junior Dos Santos
#5 Josh Barnett
#6 Francis Ngannou
#7 Vitaly Minakov
#9 Timothy Johnson
#10 Marcin Tybura
#11 Andrei Arlovski
#12 Mark Hunt
#13 Derrick Lewis
#14 Alexey Oleinik
#15 Travis Browne
The following fighters were removed from this division's rankings due to inactivity:
Cain Velasquez on 7/09/2017
Anthony Johnson on 3/23/2014
Daniel Cormier on 10/19/2014
Ben Rothwell on 4/10/2017
Stephen Puetz on 5/02/2016
Brock Lesnar on 7/09/2017
Frank Mir on 3/20/2017
Light Heavyweight (205)
#1 Daniel Cormier
#2 Anthony Johnson
#3 Ryan Bader
#4 Phil Davis
#5 Alexander Gustafsson
#6 Glover Teixeira
#7 Linton Vassell
#8 Liam McGeary
#9 Tito Ortiz
#10 Chael Sonnen
#11 Jimi Manuwa
#12 Volkan Oezdemir
#13 Ovince St Preux
#14 Mauricio Rua
#15 Antonio Rogerio Nogueira
The following fighters were removed from this division's ranking due to inactivity:
Jon Jones on 4/23/2017
Vitor Belfort on 11/09/2014
Lyoto Machida on 8/03/2014
Rashad Evans on 4/16/2017
Dan Henderson on 5/24/2015
Kelly Anundson on 9/12/2015
Quinton Jackson on 5/17/2015
Middleweight (185)
#1 Michael Bisping
#2 Robert Whittaker
#4 Ronaldo Souza
#5 Gegard Mousasi
#6 Chris Weidman
#7 Kelvin Gastelum
#8 Tim Kennedy
#9 Anderson Silva
#10 Derek Brunson
#11 Uriah Hall
#12 Vitor Belfort
#13 Antonio Carlos Junior
#14 Eric Spicely
#15 Thiago Santos
The following fighters were removed from this division's rankings due to inactivity:
Luke Rockhold on 6/04/2017
Chael Sonnen on 7/07/2013
Lyoto Machida on 6/27/2016
Cung Le on 8/23/2015
Rich Franklin on 6/23/2013
Roan Carneiro on 2/21/2017
Mark Munoz on 5/16/2016
Welterweight (170)
#1 Tyron Woodley
#2 Stephen Thompson
#3 Robbie Lawler
#4 Rory MacDonald
#5 Ben Askren
#6 Douglas Lima
#8 Neil Magny
#9 Johny Hendricks
#10 Demian Maia
#11 Carlos Condit
#12 Andrey Koreshkov
#13 Jorge Masvidal
#14 Donald Cerrone
#15 Rick Story
The following fighters were removed from this division's rankings due to inactivity:
Georges St Pierre on 11/16/2014
Kelvin Gastelum on 7/09/2017
Martin Kampmann on 8/28/2014
Nick Diaz on 3/16/2014
Ben Henderson on 4/22/2017
Lightweight (155)
#1 Khabib Nurmagomedov
#2 Conor McGregor
#3 Eddie Alvarez
#4 Tony Ferguson
#5 Rafael Dos Anjos
#6 Edson Barboza
#7 Anthony Pettis
#8 Charles Oliveira
#9 Will Brooks
#10 Brent Primus
#11 Michael Chandler
#12 Ben Henderson
#13 Gilbert Melendez
#14 Al Iaquinta
#15 Leonardo Santos
(Alex Oliveira beat Brooks at welterweight therefore not ranked)
The following fighters were removed from this division's rankings due to inactivity:
Donald Cerrone on 12/19/2016
Frankie Edgar on 8/11/2013
TJ Grant on 5/25/2014
Myles Jury on 1/03/2016
Featherweight (145)
#1 Max Holloway
#2 Jose Aldo
#3 Frankie Edgar
#5 Cub Swanson
#6 Anthony Pettis
#7 Charles Oliveira
#8 Renato Carneiro
#9 Jeremy Stephens
#10 Yair Rodriguez
#11 Andre Fili
#12 Hacran Dias
#13 Darren Elkins
#14 Chan Sung Jung
#15 Diego Brandao
The following fighters were removed from this division's rankings due to inactivity:
Conor McGregor on 12/12/2016
Chad Mendes on 12/11/2016
Nik Lentz on 5/30/2016
Iuri Alcantara on 6/23/2013
Kenny Florian on 10/08/2012
Dustin Poirier on 9/27/2015
Brian Ortega on 6/04/2017
Bantamweight (135)
#1 Cody Garbrandt
#2 Dominick Cruz
#3 TJ Dillashaw
#4 Raphael Assuncao
#5 Jimmie Rivera
#6 Urijah Faber
#7 Aljamain Sterling
#8 Matthew Lopez
#9 Johnny Eduardo
#10 John Lineker
#11 John Dodson +1
#12 Eddie Wineland +1
#13 Takeya Mizugaki +1
#14 Thomas Almeida +1
#15 Augusto Mendes +1
The following fighters were removed from this division's rankings due to inactivity:
Renan Barao on 7/25/2016
Joseph Benavidez on 8/14/2012
Bryan Caraway on 5/29/2017
Michael McDonald on 7/13/2017
Chris Cariaso on 2/25/2013
Flyweight (125)
#1 Demetrious Johnson
#2 Joseph Benavidez
#3 Kyoji Horiguchi
#4 Tyson Nam
#5 Yoni Sherbatov
#6 Ali Bagautinov
#7 Henry Cejudo
#8 Ray Borg
#9 Jussier Da Silva
#10 Sergio Pettis
#11 John Moraga
#12 Wilson Reis
#13 Brandon Moreno
#14 Dustin Ortiz
#15 Zach Makovsky
The following fighters were removed from this division's rankings due to inactivity:
Ian McCall on 1/31/2016
John Dodson on 9/05/2016
Matheus Nicolau on 7/08/2017
Women's Bantamweight (135)
#1 Amanda Nunes
#2 Valentina Shevchenko
#4 Raquel Pennington
#5 Miesha Tate
#6 Holly Holm
#7 Ronda Rousey
#8 Sara McMann
#9 Alexis Davis
#8 Sara McMann
#9 Alexis Davis
#10 Sarah Kaufman
#11 Liz Carmouche
#12 Ketlen Vieira
#13 Ashlee Evans-Smith
#11 Liz Carmouche
#12 Ketlen Vieira
#13 Ashlee Evans-Smith
#14 Marion Reneau
#15 Bethe Correia
The following fighters were removed from this division's rankings due to inactivity:
Jessica Rakoczy on 11/30/2014
Cat Zingano on 7/09/2017
Marloes Coenen on 7/30/2012
Kerry Vera on 11/20/2010
Women's Strawweight (115)
#1 Joanna Jedrzejczyk
#2 Claudia Gadelha
#3 Jessica Andrade
#4 Viviane Pereira
#5 Valerie Letourneau
#6 Carla Esparza
#8 Cynthia Calvillo +8
#9 Joanne Calderwood -1
#10 Cortney Casey -1
#11 Jessica Aguilar -1
#12 Karolina Kowalkiewicz -1
#13 Felice Herrig -1
#14 Justine Kish -1
#15 Randa Markos -1
(Calderwood beat Letourneau at Flyweight therefore no movement occurred)
