Francis Ngannou has taken over the No. 2 spot in ESPN's heavyweight rankings, thanks to the recent retirement of former UFC champion Daniel Cormier.
At light heavyweight, Dominick Reyes has grabbed the second spot after the August defeat of ex-Bellator champ Ryan Bader.
Those represent the highest level of flux in the rankings, but there's also a new entrant in the men's bantamweight top 10 whom you might have heard of: Frankie Edgar. The former UFC lightweight champ earned his spot in a new division with an Aug. 22 win over Pedro Munhoz, who drops one spot in the rankings.
In addition to Cormier, other fighters to fall out of the rankings include unbeaten strawweight Tatiana Suarez and Nina Ansaroff, neither of whom has competed since they met in June 2019.
For a list of current UFC champions in all weight classes, click here.
Note: Results are current; rankings as of Sept. 9.
Heavyweight - Light heavyweight - Middleweight - Welterweight
Lightweight - Men's featherweight - Men's bantamweight - Men's flyweight
Women's bantamweight - Women's flyweight - Strawweight
HEAVYWEIGHT (up to 265 pounds)
1. Stipe Miocic 
Record: 12-3
Last: W (UD) Daniel Cormier, Aug. 15
Next: TBD
2. Francis Ngannou 
Previous ranking: 3
Record: 15-3
Last: W (KO1) Jairzinho Rozenstruik, May 9
Next: TBD
3. Curtis Blaydes
Previous ranking: 4
Record: 14-2, 1 NC
Last: W (UD) Alexander Volkov, June 20
Next: Nov. 28 vs. Derrick Lewis
4. Jairzinho Rozenstruik
Previous ranking: 9
Record: 11-1
Last: W (TKO2) Junior dos Santos, Aug. 15
Next: TBD
5. Derrick Lewis
Previous ranking: 6
Record: 24-7, 1 NC
Last: W (TKO2) Aleksei Oleinik, Aug. 8
Next: Nov. 28 vs. Curtis Blaydes
6. Alistair Overeem
Previous ranking: 10
Record: 47-18, 1 NC
Last: W (TKO5) Augusto Sakai, Sept. 5
Next: TBD
7. Junior dos Santos 
Previous ranking: 5
Record: 21-8
Last: L (TKO2) Jairzinho Rozenstruik, Aug. 15
Next: TBD
8. Alexander Volkov
Previous ranking: 7
Record: 32-8
Last: W (TKO2) Walt Harris, Oct. 24
Next: TBD
9. Ryan Bader
Previous ranking: 8
Record: 27-6, 1 NC
Last: L (TKO2) Vadim Nemkov, Aug. 21
Next: TBD
10. Augusto Sakai
Previous ranking: Unranked
Record: 15-2-1
Last: L (TKO5) Alistair Overeem, Sept. 5
Next: TBD
LIGHT HEAVYWEIGHT (up to 205 pounds)
1. Jon Jones
Record: 26-1, 1 NC
Last: W (UD) Dominick Reyes, Feb. 8
Next: TBD
2. Dominick Reyes
Previous ranking: 3
Record: 12-2
Last: L (TKO2) Jan Blachowicz, Sept. 26
Next: TBD
3. Jan Blachowicz
Previous ranking: 4
Record: 27-8
Last: W (TKO2) Dominick Reyes, Sept. 26
Next: TBD
4. Thiago Santos
Previous ranking: 5
Record: 21-7
Last: L (SD) Jon Jones, July 6
Next: Nov. 7 vs. Glover Teixeira
5. Corey Anderson
Previous ranking: 6
Record: 13-5
Last: L (KO1) Jan Blachowicz, Feb. 15
Next: Nov. 5 vs Melvin Manhoef
6. Glover Teixeira
Previous ranking: 7
Record: 31-7
Last: W (TKO5) Anthony Smith, May 13
Next: Nov. 7 vs. Thiago Santos
7. Vadim Nemkov
Previous ranking: Unranked
Record: 12-2
Last: W (TKO2) Ryan Bader, Aug. 21
Next: TBD
8. Ryan Bader
Previous ranking: 2
Record: 27-6, 1 NC
Last: L (TKO2) Vadim Nemkov, Aug. 21
Next: TBD
9. Aleksandar Rakic
Previous ranking: Unranked
Record: 13-2
Last: W (UD) Anthony Smith, Aug. 29
Next: TBD
10. Jiri Prochazka
Previous ranking: 9
Record: 27-3-1
Last: W (KO2) Volkan Oezdemir, July 11
Next: TBD
MIDDLEWEIGHT (up to 185 pounds)
1. Israel Adesanya
Record: 20-0
Last: W (TKO2) Paulo Costa, Sept. 26
Next: TBD
2. Robert Whittaker
Record: 23-5
Last: W (UD) Jared Cannonier, Oct. 24
Next: TBD
3. Paulo Costa
Record: 13-1
Last: L (TKO2) Israel Adesanya, Sept. 26
Next: TBD
4. Yoel Romero
Record: 13-5
Last: L (UD) Israel Adesanya, March 7
Next: TBD
5. Jared Cannonier
Record: 13-5
Last: L (UD) Robert Whittaker, Oct. 24
Next: TBD
6. Jack Hermansson
Previous ranking: 7
Record: 21-5
Last: W (SUB1) Kelvin Gastelum, July 18
Next: Dec. 5 vs. Darren Till
7. Darren Till
Previous ranking: 6
Record: 18-3-1
Last: L (UD) Robert Whittaker, July 25
Next: Dec. 5 vs. Jack Hermansson
8. Derek Brunson
Previous ranking: Unranked
Record: 21-7
Last: W (TKO3) Edmen Shahbazyan, Aug. 1
Next: TBD
9. Kelvin Gastelum
Previous ranking: 8
Record: 15-6, 1 NC
Last: L (SUB1) Jack Hermansson, July 18
Next: TBD
10. Ronaldo Souza
Previous ranking: 9
Record: 26-8 1 NC
Last: L (SD) Jan Blachowicz, Nov. 16
Next: TBD
WELTERWEIGHT (up to 170 pounds)
1. Kamaru Usman
Record: 17-1
Last: W (UD) Jorge Masvidal, July 11
Next: TBD vs. Gilbert Burns
2. Colby Covington
Record: 16-2
Last: W (TKO5) Tyron Woodley, Sept. 19
Next: TBD
3. Douglas Lima
Record: 32-7
Last: W (UD) Rory MacDonald, Oct. 26
Next: Oct. 29 vs. Gegard Mousasi
4. Leon Edwards
Record: 18-3
Last: W (UD) Rafael dos Anjos, July 20
Next: TBD
5. Gilbert Burns
Record: 19-3
Last: W (UD) Tyron Woodley, May 30
Next: TBD vs. Kamaru Usman
6. Jorge Masvidal
Record: 35-14
Last: L (UD) Kamaru Usman, July 11
Next: TBD
7. Rory MacDonald
Record: 21-6-1
Last: L (UD) Douglas Lima, Oct. 26
Next: TBD
8. Tyron Woodley
Record: 19-6-1
Last: L (TKO5) Colby Covington, Sept. 19
Next: TBD
9. Stephen Thompson
Record: 15-4-1
Last: W (UD) Vicente Luque, Nov. 2
Next: TBD
10. Michael Chiesa
Record: 17-4
Last: W (UD) Rafael dos Anjos, Jan. 25
Next: TBD
LIGHTWEIGHT (up to 155 pounds)
1. Khabib Nurmagomedov
Record: 29-0
Last: W (SUB2) Justin Gaethje, Oct. 24
Next: Announced retirement
2. Justin Gaethje
Record: 22-3
Last: L (SUB2) Khabib Nurmagomedov, Oct. 24
Next: TBD
3. Tony Ferguson
Record: 25-4
Last: L (TKO5) Justin Gaethje, May 9
Next: TBD
4. Dustin Poirier
Record: 26-6
Last: W (UD) Dan Hooker, June 27
Next: TBD
5. Dan Hooker
Record: 20-9
Last: L (UD) Dustin Poirier, June 27
Next: TBD
6. Paul Felder
Record: 17-5
Last: L (SD) Dan Hooker, Feb. 22
Next: TBD
7. Michael Chandler
Previous ranking: 9
Record: 21-5
Last: W (KO1) Benson Henderson, Aug. 7
Next: TBD
8. Conor McGregor
Previous ranking: 7
Record: 22-4
Last: W (TKO1) Donald Cerrone, Jan. 18
Next: TBD
9. Charles Oliveira
Previous ranking: 8
Record: 29-8, 1 NC
Last: W (SUB3) Kevin Lee, March 14
Next: TBD
10. Diego Ferreira
Previous ranking: Unranked
Record: 17-2
Last: W (SUB2) Anthony Pettis, Jan. 18
Next: TBD
MEN'S FEATHERWEIGHT (up to 145 pounds)
1. Alexander Volkanovski
Record: 22-1
Last: W (SD) Max Holloway, July 11
Next: TBD
2. Max Holloway
Record: 21-6
Last: L (SD) Alexander Volkanovski, July 11
Next: TBD
3. Brian Ortega
Record: 15-1, 1 NC
Last: W (UD) Chan Sung Jung, Oct. 17
Next: TBD
4. Patricio Freire
Record: 30-4
Last: W (UD) Juan Archuleta, Sept. 28
Next: Nov. 12 vs. Pedro Carvalho
5. Zabit Magomedsharipov
Record: 18-1
Last: W (UD) Calvin Kattar, Nov. 9
Next: TBD
6. Calvin Kattar
Record: 22-4
Last: W (UD) Dan Ige, July 15
Next: TBD
7. Yair Rodriguez
Record: 13-2, 1 NC
Last: W (UD) Jeremy Stephens, Oct. 18
Next: TBD
8. Chan Sung Jung
Record: 16-6
Last: L (UD) Brian Ortega, Oct. 17
Next: TBD
9. Josh Emmett
Record: 16-2
Last: W (UD) Shane Burgos, June 20
Next: TBD
10. Shane Burgos
Record: 13-2
Last: L (UD) Josh Emmett, June 20
Next: TBD
MEN'S BANTAMWEIGHT (up to 135 pounds)
1. Petr Yan
Record: 15-1
Last: W (TKO5) Jose Aldo, July 11
Next: Dec. 12 vs. Aljamain Sterling
2. Marlon Moraes
Record: 23-7-1
Last: L (TKO2) Cory Sandhagen, Oct. 10
Next: TBD
3. Aljamain Sterling
Record: 19-3
Last: W (SUB1) Cory Sandhagen, June 6
Next: Dec. 12 vs. Petr Yan
4. Cody Garbrandt
Record: 12-3
Last: W (KO2) Raphael Assuncao, June 6
Next: TBD
5. Jose Aldo
Record: 28-7
Last: L (TKO5) Petr Yan, July 11
Next: TBD
6. Cory Sandhagen
Record: 13-2
Last: W (TKO2) Marlon Moraes, Oct. 10
Next: TBD
7. Frankie Edgar
Previous ranking: Unranked
Record: 24-8-1
Last: W (SD) Pedro Munhoz, Aug. 22
Next: TBD
8. Pedro Munhoz
Previous ranking: 7
Record: 18-5, 1 NC
Last: L (SD) Frankie Edgar, Aug. 22
Next: TBD
9. Raphael Assuncao
Previous ranking: 8
Record: 27-8
Last: L (KO2) Cody Garbrandt, June 6
Next: TBD
10. Jimmie Rivera
Previous ranking: 9
Record: 23-4
Last: W (UD) Cody Stamann, July 16
Next: TBD
MEN'S FLYWEIGHT (up to 125 pounds)
1. Demetrious Johnson
Record: 30-3-1
Last: W (UD) Danny Kingad, Oct. 12
Next: TBD vs. Adriano Moraes
2. Deiveson Figueiredo
Record: 19-1
Last: W (SUB1) Joseph Benavidez, July 18
Next: Nov. 21 vs. Alex Perez
3. Brandon Moreno
Record: 16-5-1
Last: W (UD) Kai Kara-France, Dec. 14
Next: Nov. 21 vs. Brandon Royval
4. Joseph Benavidez
Record: 28-7
Last: L (SUB1) Deiveson Figueiredo, July 18
Next: TBD
5. Alex Perez
Record: 24-5
Last: W (TKO2) Jussier Formiga, June 6
Next: Nov. 21 vs. Deiveson Figueiredo
6. Askar Askarov
Record: 12-0-1
Last: W (UD) Alexandre Pantoja, July 18
Next: TBD
7. Alexandre Pantoja
Record: 22-5
Last: L (UD) Askar Askarov, July 18
Next: TBD
8. Kai Kara-France
Record: 21-9, 1 NC
Last: L (SUB2) Brandon Royval, Sept. 26
Next: TBD
9. Jussier Formiga
Record: 23-8
Last: L (TKO1) Alex Perez, June 6
Next: TBD
10. Rogerio Bontorin
Record: 16-2
Last: L (UD) Ray Borg, Feb. 15
Next: TBD
WOMEN'S BANTAMWEIGHT (up to 135 pounds)
1. Amanda Nunes
Record: 20-4
Last: W (UD) Felicia Spencer, June 6
Next: Dec. 12 vs. Megan Anderson
2. Germaine de Randamie
Record: 10-4
Last: W (TechSUB3) Julianna Peña, Oct. 3
Next: TBD
3. Aspen Ladd
Record: 9-1
Last: W (TKO3) Yana Kunitskaya, Dec. 7
Next: TBD
4. Julianna Peña
Record: 9-4
Last: L (TechSUB) Germaine de Randamie, Oct. 3
Next: TBD
5. Irene Aldana
Record: 12-6
Last: L (UD) Holly Holm, Oct. 3
Next: TBD
6. Holly Holm
Record: 14-5
Last: W (UD) Irene Aldana, Oct. 3
Next: TBD
7. Ketlen Vieira
Record: 11-1
Last: W (UD) Sijara Eubanks, Sept. 26
Next: TBD
8. Raquel Pennington
Record: 11-8
Last: W (UD) Marion Reneau, June 20
Next: TBD
9. Yana Kunitskaya
Previous ranking: 10
Record: 13-5, 1 NC
Last: W (UD) Julija Stoliarenko, Aug. 8
Next: TBD
10. Sara McMann
Previous ranking: Unranked
Record: 12-5
Last: W (UD) Lina Lansberg, Jan. 25
Next: TBD
WOMEN'S FLYWEIGHT (up to 125 pounds)
1. Valentina Shevchenko
Record: 19-3
Last: W (TKO3) Katlyn Chookagian, Feb. 8
Next: Nov. 21 vs. Jennifer Maia
2. Ilima-Lei Macfarlane
Record: 11-0
Last: W (UD) Kate Jackson, Dec. 21
Next: TBD
3. Katlyn Chookagian
Record: 14-4
Last: L (TKO1) Jessica Andrade, Oct. 17
Next: TBD
4. Jennifer Maia
Previous ranking: 9
Record: 18-6-1
Last: W (SUB1) Joanne Calderwood, Aug. 1
Next: Nov. 21 vs. Valentina Shevchenko
5. Joanne Calderwood
Previous ranking: 4
Record: 14-5
Last: L (SUB1) Jennifer Maia, Aug. 1
Next: TBD
6. Cynthia Calvillo
Previous ranking: 5
Record: 9-1-1
Last: W (UD) Jessica Eye, June 13
Next: TBD
7. Lauren Murphy
Previous ranking: 6
Record: 14-4
Last: W (SUB2) Liliya Shakirova, Oct. 24
Next: TBD
8. Liz Carmouche
Previous ranking: 7
Record: 13-7
Last: L (UD) Valentina Shevchenko, Aug. 10
Next: TBD vs. Mandy Bohm
9. Jessica Eye
Previous ranking: 8
Record: 15-7, 1 NC
Last: W (UD) Viviane Araujo
Next: TBD
10. Viviane Araujo
Previous ranking: Unranked
Record: 9-2
Last: W (UD) Montana De La Rosa, Sept. 5
Next: TBD
STRAWWEIGHT (up to 115 pounds)
1. Zhang Weili
Record: 21-1
Last: W (SD) Joanna Jedrzejczyk, March 7
Next: TBD
2. Rose Namajunas
Record: 9-4
Last: W (SD) Jessica Andrade, July 11
Next: TBD
3. Joanna Jedrzejczyk
Record: 16-4
Last: L (SD) Zhang Weili, March 7
Next: TBD
4. Jessica Andrade
Record: 21-8
Last: W (TKO1) Katlyn Chookagian, Oct. 17
Next: TBD
5. Carla Esparza
Previous ranking: 6
Record: 17-6
Last: W (SD) Marina Rodriguez, July 25
Next: TBD
6. Claudia Gadelha
Previous ranking: 7
Record: 18-4
Last: W (SD) Angela Hill, May 16
Next: TBD
7. Michelle Waterson
Previous ranking: 9
Record: 18-8
Last: W (SD) Angela Hill, Sept. 12
Next: TBD
8. Marina Rodriguez
Previous ranking: 10
Record: 12-1-2
Last: L (SD) Carla Esparza, July 25
Next: TBD
9. Yan Xiaonan
Previous ranking: Unranked
Record: 12-1, 1 NC
Last: W (UD) Karolina Kowalkiewicz, Feb. 23
Next: TBD
10. Tecia Torres
Previous ranking: Unranked
Record: 11-5
Last: W (UD) Brianna Van Buren, June 20
Next: TBD