What a difference a week makes. On Sept. 7, Khabib Nurmagomedov put on another dominant performance, successfully defending his UFC lightweight championship by choking out Dustin Poirier. For the 28-0 Nurmagomedov, it was his 12th UFC victory -- the best start in promotion history.
He does not budge in the ESPN 155-pound rankings, though, as he already was No. 1.
A week earlier, on Aug. 31, Zhang Weili made history by becoming the first Chinese champion in the UFC. And her 42-second victory over Jessica Andrade to capture the strawweight championship also gave her a big boost in the 115-pound rankings. She sits at the top now, after going into the fight at No. 7.
Check out my rankings within each MMA weight division by clicking on the links below.
For a list of current UFC champions in all weight classes, click here.
Note: Results are current, rankings as of Sept. 13.
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: 19-3
Last: W (TKO4) Daniel Cormier, Aug. 17
Next: TBD
2. Daniel Cormier
Record: 22-2, 1 NC
Last: L (TKO4) Stipe Miocic, Aug. 17
Next: TBD
3. Francis Ngannou
Record: 14-3
Last: W (TKO1) Junior dos Santos, June 29
Next: TBD
4. Curtis Blaydes
Record: 12-2, 1 NC
Last: W (TKO2) Shamil Abdurakhimov, Sept. 7
Next: TBD
5. Junior dos Santos
Record: 21-6
Last: L (TKO1) Francis Ngannou, June 29
Next: Nov. 9 vs. Alexander Volkov
6. Derrick Lewis
Record: 21-7
Last: L (TKO2) Junior dos Santos, March 9
Next: Nov. 2 vs. Blagoy Ivanov
7. Alexander Volkov
Record: 30-7
Last: L (KO3) Derrick Lewis, Oct. 6
Next: Nov. 9 vs. Junior dos Santos
8. Alistair Overeem
Record: 45-17, 1 NC
Last: W (TKO1) Aleksei Oleinik, April 20
Next: Dec. 7 vs. Walt Harris
9. Ryan Bader
Record: 27-5, 1 NC
Last: NC Cheick Kongo, Sept. 7
Next: TBD
10. Cheick Kongo
Record: 30-10-2, 1 NC
Last: NC Ryan Bader, Sept. 7
Next: TBD
LIGHT HEAVYWEIGHT(up to 205 pounds)
1. Jon Jones
Record: 25-1, 1 NC
Last: W (SD) Thiago Santos, July 6
Next: TBD
2. Ryan Bader
Record: 27-5, 1 NC
Last: NC Cheick Kongo, Sept. 7
Next: TBD
3. Anthony Smith
Record: 32-14
Last: W (SUB4) Alexander Gustafsson, June 1
Next: TBD
4. Thiago Santos
Record: 21-7
Last: L (SD) Jon Jones, July 6
Next: TBD
5. Jan Blachowicz
Record: 24-9
Last: W (KO2) Luke Rockhold, July 6
Next: TBD
6. Corey Anderson
Record: 12-4
Last: W (UD) Ilir Latifi, Dec. 29
Next: Nov. 2 vs. Johnny Walker
7. Dominick Reyes
Record: 11-0
Last: W (SD) Volkan Oezdemir, March 16
Next: Oct. 18 vs. Chris Weidman
8. Volkan Oezdemir
Record: 16-4
Last: W (TKO2) Ilir Latifi, Aug. 10
Next: TBD
9. Glover Teixeira
Record: 30-7
Last: W (SD) Nikita Krylov, Sept. 14
Next: TBD
10. Aleksandar Rakic
Record: 12-1
Last: W (KO1) Jimi Manuwa, June 1
Next: TBD
MIDDLEWEIGHT (up to 185 pounds)
1. Robert Whittaker
Record: 20-4
Last: W (SD) Yoel Romero, June 9, 2018
Next: Oct. 6 vs. Israel Adesanya
2. Israel Adesanya
Record: 17-0
Last: W (UD) Kelvin Gastelum, April 13
Next: Oct. 6 vs. Robert Whittaker
3. Kelvin Gastelum
Record: 15-4, 1 NC
Last: L (UD) Israel Adesanya, April 13
Next: Nov. 2 vs. Darren Till
4. Paulo Costa
Record: 13-0
Last: W (UD) Yoel Romero, Aug. 17
Next: TBD
5. Yoel Romero
Record: 13-4
Last: L (UD) Paulo Costa, Aug. 17
Next: TBD
6. Jack Hermansson
Record: 20-4
Last: W (UD) Ronaldo Souza, April 27
Next: Sept. 28 vs. Jared Cannonier
7. Ronaldo Souza
Record: 26-7, 1 NC
Last: L (UD) Jack Hermansson, April 27
Next: TBD
8. Rafael Lovato Jr.
Record: 10-0
Last: W (MD) Gegard Mousasi, June 22
Next: TBD
9. Gegard Mousasi
Record: 45-7-2
Last: L (MD) Rafael Lovato Jr., June 22
Next: Sept. 28 vs. Lyoto Machida
10. Derek Brunson
Record: 20-7
Last: W (UD) Ian Heinisch, Aug. 17
Next: TBD
Cormier examines Usman's technique and patience
Daniel Cormier breaks down Kamaru Usman's fighting style and patience from his 5-round showdown vs. Tyron Woodley. For more Detail, sign up for ESPN+ https://plus.espn.com/
WELTERWEIGHT (up to 170 pounds)
1. Kamaru Usman
Record: 15-1
Last: W (UD) Tyron Woodley, March 2
Next: TBD
2. Colby Covington
Record: 15-1
Last: W (UD) Robbie Lawler, Aug. 3
Next: TBD
3. Tyron Woodley
Record: 19-4-1
Last: L (UD) Kamaru Usman, March 2
Next: TBD
4. Rory MacDonald
Record: 21-5-1
Last: W (UD) Neiman Gracie, June 14
Next: Oct. 26 vs. Douglas Lima
5. Jorge Masvidal
Record: 34-13
Last: W (KO1) Ben Askren, July 6
Next: Nov. 2 vs. Nate Diaz
6. Leon Edwards
Record: 18-3
Last: W (UD) Rafael dos Anjos, July 20
Next: TBD
7. Douglas Lima
Record: 31-7
Last: W (KO2) Michael Page, May 11
Next: Oct. 26 vs. Rory MacDonald
8. Rafael dos Anjos
Record: 29-12
Last: L (UD) Leon Edwards, July 20
Next: TBD
9. Santiago Ponzinibbio
Record: 27-3
Last: W (KO4) Neil Magny, Nov. 17
Next: TBD
10. Stephen Thompson
Record: 14-4-1
Last: L (TKO2) Anthony Pettis, March 23
Next: Nov. 2 vs. Vicente Luque
LIGHTWEIGHT (up to 155 pounds)
1. Khabib Nurmagomedov
Record: 28-0
Last: W (SUB3) Dustin Poirier, Sept. 7
Next: TBD
2. Tony Ferguson
Record: 25-3
Last: W (TKO2) Donald Cerrone, June 8
Next: TBD
3. Dustin Poirier
Record: 25-6
Last: L (SUB3) Khabib Nurmagomedov, Sept. 7
Next: TBD
4. Donald Cerrone
Record: 36-13, 1 NC
Last: L (TKO1) Justin Gaethje, Sept. 14
Next: TBD
5. Justin Gaethje
Record: 21-2
Last: W (TKO1) Donald Cerrone, Sept. 14
Next: TBD
6. Al Iaquinta
Record: 14-5-1
Last: L (UD) Donald Cerrone, May 4
Next: Oct. 6 vs. Dan Hooker
7. Paul Felder 
Record: 17-4
Last: W (SD) Edson Barboza, Sept. 7
Next: TBD
8. Michael Chandler
Record: 19-5
Last: L (TKO1) Patricio Freire, May 11
Next: TBD
9. Patricio Freire
Record: 29-4
Last: W (TKO1) Michael Chandler, May 11
Next: Sept. 28 vs. Juan Archuleta
10. Charles Oliveira
Record: 27-8, 1 NC
Last: W (TKO2) Nik Lentz, May 18
Next: TBD
MEN'S FEATHERWEIGHT (up to 145 pounds)
1. Max Holloway
Record: 21-4
Last: W (UD) Frankie Edgar, July 28
Next: TBD
2. Alexander Volkanovski
Record: 20-1
Last: W (UD) Jose Aldo, May 11
Next: TBD
3. Brian Ortega
Record: 14-1, 1 NC
Last: L (TKO4) Max Holloway, Dec. 8
Next: TBD
4. Jose Aldo
Record: 28-5
Last: L (UD) Alexander Volkanovski, May 11
Next: TBD
5. Patricio Freire
Record: 29-4
Last: W (TKO1) Michael Chandler, May 11
Next: Sept. 28 vs. Juan Archuleta
6. Zabit Magomedsharipov
Record: 17-1
Last: W (UD) Jeremy Stephens, March 2
Next: Nov. 9 vs. Calvin Kattar
7. Chan Sung Jung
Record: 15-5
Last: W (TKO1) Renato Moicano, June 22
Next: TBD
8. Frankie Edgar
Record: 28-15
Last: L (UD) Max Holloway, July 28
Next: TBD
9. Jeremy Stephens
Record: 28-16
Last: L (UD) Zabit Magomedsharipov, March 2
Next: Sept. 21 vs. Yair Rodriguez
10. Josh Emmett
Record: 15-2
Last: W (TKO2) Mirsad Bektic, July 13
Next: TBD
Rogan: Cejudo's set of skills are 'unparalleled'
Joe Rogan breaks down his 3 stars of UFC 238, including Henry Cejudo's main event win. For more UFC action, sign up for ESPN+ http://plus.espn.com/ufc.
MEN'S BANTAMWEIGHT (up to 135 pounds)
1. Henry Cejudo
Record: 15-2
Last: W (TKO3) Marlon Moraes, June 8
Next: TBD
2. Marlon Moraes
Record: 22-6-1
Last: L (TKO3) Henry Cejudo, June 8
Next: TBD
3. Aljamain Sterling
Record: 18-3
Last: W (UD) Pedro Munhoz, June 8
Next: TBD
4. Dominick Cruz
Record: 22-2
Last: L (UD) Cody Garbrandt, Dec. 30, 2016
Next: TBD
5. Cory Sandhagen
Record: 12-1
Last: W (UD) Raphael Assuncao, Aug. 17
Next: TBD
6. Petr Yan
Record: 13-1
Last: W (UD) Jimmie Rivera, June 8
Next: TBD
7. Raphael Assuncao
Record: 27-7
Last: L (UD) Cory Sandhagen, Aug. 17
Next: TBD
8. Pedro Munhoz
Record: 18-4, 1 NC
Last: L (UD) Aljamain Sterling, June 8
Next: TBD
9. Kyoji Horiguchi
Record: 28-2
Last: L (TKO1) Kai Asakura, Aug. 18
Next: TBD
10. Cody Garbrandt
Record: 11-3
Last: L (TKO1) Pedro Munhoz, March 2
Next: TBD
MEN'S FLYWEIGHT (up to 125 pounds)
1. Henry Cejudo
Record: 15-2
Last: W (TKO3) Marlon Moraes, June 8
Next: TBD
2. Demetrious Johnson
Record: 29-3-1
Last: W (UD)Tatsumitsu Wada, Aug. 2
Next: TBD
3. Joseph Benavidez
Record: 28-5
Last: W (TKO2) Jussier Formiga, June 29
Next: TBD
4. Deiveson Figueiredo
Record: 16-1
Last: W (UD) Alexandre Pantoja, July 27
Next: Oct. 12 vs Tim Elliott
5. Jussier Formiga
Record: 23-6
Last: L (TKO2) Joseph Benavidez, June 29
Next: TBD
6. Alexandre Pantoja
Record: 21-4
Last: L (UD) Deiveson Figueiredo, July 27
Next: TBD
7. Rogerio Bontorin
Record: 16-1
Last: W (TKO1) Raulian Paiva, Aug. 10
Next: TBD
8. Alex Perez
Record: 21-5
Last: L (TKO1) Josephj Benavidez, Nov. 30
Next: TBD
9. Matt Schnell
Record: 14-4
Last: W (SUB) Jordan Espinosa, Aug. 3
Next: TBD
10. Adriano Moraes
Record: 18-3
Last: W (UD) Geje Eustaquio, Jan. 25
Next: TBD
WOMEN'S BANTAMWEIGHT (up to 135 pounds)
1. Amanda Nunes
Record: 18-4
Last: W (TKO1) Holly Holm, July 6
Next: Dec. 14 vs. Germaine de Randamie
2. Germaine de Randamie
Record: 9-3
Last: W (TKO1) Aspen Ladd, July 13
Next: Dec. 14 vs. Amanda Nunes
3. Ketlen Vieira
Record: 10-0
Last: W (SD) Cat Zingano, March 3, 2018
Next: TBD
4. Aspen Ladd
Record: 8-1
Last: L (TKO1) Germaine de Randamie, July 13
Next: Dec. 7 vs. Yana Kunitskaya
5. Julianna Peña
Record: 9-3
Last: W (UD) Nicco Montaño, July 13
Next: TBD
6. Holly Holm
Record: 12-5
Last: L (TKO1) Amanda Nunes, July 6
Next: Oct. 5 vs. Raquel Pennington
7. Raquel Pennington
Record: 9-7
Last: L (UD) Germaine de Randamie, Nov. 11
Next: Oct. 5 vs. Holly Holm
8. Cat Zingano
Record: 10-4
Last: L (TKO1) Megan Anderson, Dec. 29
Next: TBD
9. Yana Kunitskaya
Record: 15-4, 1 NC
Last: W (UD) Marion Reneau, March 9
Next: Dec. 7 vs. Aspen Ladd
10. Marion Reneau
Record: 9-5-1
Last: L (UD) Yana Kunitskaya, March 9
Next: Sept. 21 vs. Irene Aldana
WOMEN'S FLYWEIGHT (up to 125 pounds)
1. Valentina Shevchenko
Record: 18-3
Last: W (UD) Liz Carmouche, Aug. 10
Next: TBD
2. Ilima-Lei Macfarlane
Record: 10-0
Last: W (TKO3) Veta Arteaga, April 27
Next: TBD
3. Katlyn Chookagian
Record: 12-2
Last: W (UD) Joanne Calderwood, June 8
Next: Nov. 2 vs Jennifer Maia
4. Joanne Calderwood
Record: 14-4
Last: W (SD) Andrea Lee, Sept. 7
Next: TBD
5. Liz Carmouche
Record: 13-7
Last: L (UD) Valentina Shevchenko, Aug. 10
Next: TBD
6. Jessica Eye
Record: 14-7, 1 NC
Last: L (KO2) Valentina Shevchenko, June 8
Next: Dec. 14 vs Viviane Araujo
7. Jennifer Maia
Record: 17-5-1
Last: W (UD) Rosanne Modafferi, July 20
Next: Nov. 2 vs. Katlyn Chookagian
8. Viviane Araujo
Record: 8-1
Last: W (UD) Alexis Davis, July 27
Next: Dec. 14 vs Jessica Eye
9. Andrea Lee 
Record: 11-3
Last: L (SD) Joanne Calderwood, Sept. 7
Next: TBD
10. Roxanne Modafferi
Record: 23-16
Last: L (UD) Jessica Maia, July 20
Next: TBD
Bisping impressed by Zhang's big win over Andrade
Michael Bisping reacts to Zhang Weili's huge win vs. Jessica Andrade to claim the women's strawweight title and become the first Chinese champion in UFC history.
STRAWWEIGHT (up to 115 pounds)
1. Zhang Weili
Record: 20-1
Last: W (TKO1) Jessica Andrade, Aug. 31
Next: TBD
2. Jessica Andrade
Record: 20-7
Last: L (TKO1) Zhang Weili, Aug. 31
Next: TBD
3. Rose Namajunas
Record: 8-4
Last: L (TKO2) Jessica Andrade, May 11
Next: TBD
4. Joanna Jedrzejczyk
Record: 15-3
Last: L (UD) Valentina Shevchenko, Dec. 8
Next: Oct. 12 vs. Michelle Waterson
5. Tatiana Suarez
Record: 8-0
Last: W (UD) Nina Ansaroff, June 8
Next: TBD
6. Michelle Waterson
Record: 17-6
Last: W (UD) Karolina Kowalkiewicz, March 30
Next: Oct. 12 vs. Joanna Jedrzejczyk
7. Nina Ansaroff
Record: 10-6
Last: L (UD) Tatiana Suarez, June 8
Next: TBD
8. Claudia Gadelha
Record: 17-4
Last: W (UD) Randa Markos, July 6
Next: Dec. 7 vs. Cynthia Calvillo
9. Alexa Grasso
Record: 11-2
Last: W (UD) Karolina Kowalkiewicz, June 8
Next: Sept. 21 vs. Carla Esparza
10. Carla Esparza
Record: 14-6
Last: W (UD) Virna Jandiroba, April 27
Next: Sept. 21 vs. Alexa Grasso