If Amanda Nunes follows through with the retirement announcement she made following Saturday's dominant decision win over Irene Aldana, she will leave the sport from a very familiar position: on top.
As has been the case with other high-profile MMA retirements in recent times, the ESPN pound-for-pound rankings will retain Nunes for this update. If her retirement sticks, Nunes will be removed the next time our panel votes on a women's top 10.
The other big winner at UFC 289 was Charles Oliveira, who reasserted himself as a lightweight to contend with by finishing Beneil Dariush in the first round. But there was no upward movement available to Oliveira in the men's top 10, because he already was ranked highly, behind only some of the most dominant champions in the sport.
One departure from the rankings: Rose Namajunas, who last competed in May 2022 and no longer is eligible for our women's top 10.
For the ESPN divisional MMA rankings, click here.
Note: Results are current; rankings as of June 12. In order to be eligible for the rankings, a fighter must have competed over the past 12 months or must have an upcoming fight booked. Fighters who have been dropped for inactivity can be reinstated only after they compete.
Women's pound-for-pound rankings
1. Amanda Nunes 
UFC bantamweight and featherweight champion
Record: 23-5
Last: W (UD) Irene Aldana, June 10, 2023
Next: Retirement
2. Zhang Weili
UFC strawweight champion
Record: 23-3
Last: W (Sub2) Carla Esparza, Nov. 12, 2022
Next: Aug. 19 vs. Amanda Lemos
UFC flyweight
Record: 22-4
Last: L (Sub4) Alexa Grasso, March 4, 2023
Next: TBD
4. Alexa Grasso
UFC flyweight champion
Record: 16-3
Last: W (Sub4) Valentina Shevchenko, March 4, 2023
Next: TBD
UFC bantamweight
Record: 11-5
Last: L (UD) Amanda Nunes, July 30, 2022
Next: TBD
UFC flyweight
Previous ranking: 7
Record: 11-1
Last: W (Sub2) Jessica Andrade, Feb. 18, 2023
Next: TBD
UFC strawweight
Previous ranking: 8
Record: 19-7
Last: L (Sub2) Zhang Weili, Nov. 12, 2022
Next: TBD
T-8. Kayla Harrison 
PFL lightweight
Previous ranking: 9
Record: 15-1
Last: L (UD) Larissa Pacheco, Nov. 25, 2022
Next: TBD
T-8. Yan Xiaonan
UFC strawweight
Previous ranking: 10
Record: 17-3
Last: W (KO1) Jessica Andrade, May 6, 2023
Next: TBD
10. Amanda Lemos
UFC strawweight
Previous ranking: Unranked
Record: 13-2-1
Last: W (TKO3) Marina Rodriguez, Nov. 5, 2022
Next: Aug. 19 vs. Zhang Weili
Other fighters receiving votes: Liz Carmouche, Jessica Andrade, Larissa Pacheco, Raquel Pennington, Seika Izawa and Manon Fiorot.
How our panel voted
Brett Okamoto: 1. Amanda Nunes; 2. Valentina Shevchenko; 3. Zhang Weili; 4. Alexa Grasso; 5. Julianna Peña; 6. Kayla Harrison; 7. Erin Blanchfield; 8. Carla Esparza; 9. Jessica Andrade; 10. Yan Xiaonan.
Marc Raimondi: 1. Nunes; 2. Shevchenko; 3. Zhang; 4. Grasso; 5. Peña; 6. Blanchfield; 7. Esparza; 8. Yan; 9. Seika Izawa; 10. Amanda Lemos.
Megan Anderson: 1. Nunes; 2. Zhang; 3. Shevchenko; 4. Grasso; 5. Esparza; 6. Blanchfield; 7. Yan; 8. Raquel Pennington; 9. Peña; 10. Manon Fiorot.
Carlos Contreras Legaspi: 1. Nunes; 2. Shevchenko; 3. Zhang; 4. Grasso; 5. Peña; 6. Harrison; 7. Esparza; 8. Blanchfield; 9. Yan; 10. Andrade.
Eddie Maisonet III: 1. Nunes; 2. Zhang; 3. Grasso; 4. Shevchenko; 5. Peña; 6. Blanchfield; 7. Lemos; 8. Larissa Pacheco; 9. Harrison; 10. Liz Carmouche.
Jeff Wagenheim: 1. Nunes; 2. Zhang; 3. Shevchenko; 4. Grasso; 5. Peña; 6. Blanchfield; 7. Esparza; 8. Carmouche; 9. Yan; 10. Lemos.
Men's pound-for-pound rankings
T-1. Islam Makhachev
UFC lightweight champion
Record: 24-1
Last: W (UD) Alexander Volkanovski, Feb. 11, 2023
Next: TBD
UFC featherweight champion
Record: 25-2
Last: L (UD) Islam Makhachev, Feb. 11, 2023
Next: July 8 vs. Yair Rodriguez
3. Jon Jones
UFC heavyweight champion
Record: 27-1, 1 NC
Last: W (Sub1) Ciryl Gane, March 4, 2023
Next: TBD
UFC middleweight champion
Record: 24-2
Last: W (TKO2) Alex Pereira, April 8, 2023
Next: TBD
5. Leon Edwards
UFC welterweight champion
Record: 21-3, 1 NC
Last: W (MD) Kamaru Usman, March 18, 2023
Next: TBD
UFC lightweight
Record: 34-9, 1 NC
Last: W (TKO1) Beneil Dariush, June 10, 2023
Next: TBD
UFC bantamweight champion
Record: 22-3
Last: W (SD) Henry Cejudo, May 6, 2023
Next: Aug. 19 vs. Sean O'Malley
8. Kamaru Usman
UFC welterweight
Record: 20-3
Last: L (MD) Leon Edwards, March 18, 2023
Next: TBD
UFC flyweight champion
Record: 21-6-2
Last: W (TKO3) Deiveson Figueiredo, Jan. 21, 2023
Next: July 8 vs. Alexandre Pantoja
10. Robert Whittaker
UFC middleweight
Record: 24-6
Last: W (UD) Marvin Vettori, Sept. 3, 2022
Next: July 8 vs. Dricus Du Plessis
Other fighters receiving votes: Dustin Poirier, Patricio "Pitbull" Freire, and Alex Pereira.
How our panel voted
Brett Okamoto: 1. Islam Makhachev; 2. Alexander Volkanovski; 3. Jon Jones; 4. Israel Adesanya; 5. Leon Edwards; 6. Charles Oliveira; 7. Aljamain Sterling; 8. Robert Whittaker; 9. Brandon Moreno; 10. Kamaru Usman.
Marc Raimondi: 1. Jones; 2. Makhachev; 3. Volkanovski; 4. Adesanya; 5. Sterling; 6. Edwards; 7. Oliveira; 8. Moreno; 9. Usman; 10. Dustin Poirier.
Megan Anderson: 1. Jones; 2. Volkanovski; 3. Makhachev; 4. Adesanya; 5. Edwards; 6. Oliveira; 7. Usman; 8. Whittaker; 9. Moreno; 10. Sterling.
Carlos Contreras Legaspi: 1. Volkanovski; 2. Makhachev; 3. Jones; 4. Adesanya; 5. Edwards; 6. Oliveira; 7. Usman; 8. Moreno; 9. Sterling; 10. Pereira.
Eddie Maisonet III: 1. Volkanovski; 2. Makhachev; 3. Adesanya; 4. Jones; 5. Sterling; 6. Oliveira; 7. Edwards; 8. Poirier; 9. Usman; 10. Moreno.
Jeff Wagenheim: 1. Makhachev; 2. Volkanovski; 3. Jones; 4. Adesanya; 5. Edwards; 6. Oliveira; 7. Sterling; 8. Usman; 9. Moreno; 10. Patricio "Pitbull" Freire.