ESPN's women's pound-for-pound rankings

Who is the world's best women's mixed martial artist, regardless of weight class? My latest top-10 ranking is listed below.

In addition, here is my men's pound-for-pound ranking.

Note: Results through Jan. 4.

= champion

Cris Justino

1. Cris Justino
Record: 19-1
Div.: Featherweight (Invicta FC/UFC)
Last: W (UD) Holly Holm, Dec. 30, 2017
Next: TBD

Cyborg faced the most difficult challenge of her career in Holly Holm at UFC 219, but the result was a familiar one: A win. Justino wasn't as dominant as she's been in the past, but there was no doubt she won the fight. Of course, the immediate question in an empty division becomes: Who's next?

Amanda Nunes

2. Amanda Nunes
Record: 15-4
Div.: Bantamweight (UFC)
Last: W (SD) Valentina Shevchenko, Sept. 9, 2017
Next: TBD

It's been an up-and-down year for Nunes, coming off a 2016 campaign that saw her dominate the likes of Miesha Tate and Ronda Rousey. She was forced to pull out of UFC 213 in July, but came back to defend her title against Valentina Shevchenko.

Joanna Jedrzejczyk

3. Joanna Jedrzejczyk
Record: 14-1
Div.:L (KO1)
Rose Namajunas, Nov. 4, 2017
Last: L (TKO1) Rose Namajunas, Nov. 4, 2017
Next: UFC 217 on Nov. 4, vs. Rose Namajunas

Jedrzejczyk's perfect record came crashing down in November, when she was quickly upset by Rose Namajunas at UFC 217. That one result does little to her standing as one of the best women in the world, but it will of course be interesting to see how she rebounds from such a devastating experience.

Valentina Shevchenko

4. Valentina Shevchenko
Record: 14-3
Div.: Bantamweight (UFC)
Last: L (SD) Amanda Nunes, Sept. 9, 2017
Next: UFC Fight Night on Feb. 3, vs. Priscila Cachoeira

Shevchenko's second loss to Amanda Nunes at UFC 215 may haunt her for some time -- as she remains convinced the judges got it wrong up in Edmonton, Canada. Her style is effective, but can lead to close fights. She came out on the short end of this one.

Rose Namajunas

5. Rose Namajunas

Record: 7-3
Div.: Strawweight (UFC)
Last: W (KO1) Joanna Jedrzejczyk, Nov. 4, 2017
Next: UFC 217 on Nov. 4, vs. Joanna Jedrzejczyk

Namajunas gave the performance of a lifetime at UFC 217 -- not just beating Joanna Jedrzejczyk but decimating her in the first round. She immediately has an entire division nipping at her heels, not to mention Jedrzejczyk, but if she fights like she did in New York, it won't be a problem.

Jessica Andrade

6. Jessica Andrade
Record: 17-6
Div.: Strawweight (UFC)
Last: W (UD) Claudia Gadelha, UFC Fight Night on Sept. 22 vs. Claudia Gadelha
Next: UFC Fight Night on Feb. 24, vs. Tecia Torres

Andrade came roaring back from a disappointing loss to Joanna Jedrzejczyk in May with a complete dismantling of the very talented Claudia Gadelha. Andrade probably hasn't even hit her prime years yet. She's a force to be reckoned with.

Claudia Gadelha

7. Claudia Gadelha
Record: 15-3
Div.: Strawweight (UFC)
Last: L (UD) Jessica Andrade, UFC Fight Night on Sept. 22
Next: TBD

Prior to September, Gadelha's reputation was basically she could beat any strawweight in the world besides Joanna Jedrzejczyk. That is no longer the case, as she dropped a three-round decision to Jessica Andrade. We'll see where she goes from here.

Raquel Pennington

8. Raquel Pennington
Record: 9-5
Div.: Bantamweight (UFC)
Last: W (UD) Miesha Tate, Nov. 12, 2016
Next: TBD

Pennington has flown under the radar in the UFC's 135-pound division, and she's scheduled to miss a good chunk of 2017 for shoulder surgery. But her only losses in the UFC have been razor-thin decisions to Jessica Andrade and Holly Holm. She's on the cusp of breaking through to a title shot.

Karolina Kowalkiewicz

9. Karolina Kowalkiewicz
Record: 11-2
Div.: Strawweight (UFC)
Last: W (UD) Jodie Esquibel, Oct. 21, 2017
Next: TBD

Kowalkiewicz snapped the first losing skid of her career by absolutely dominating Jodie Esquibel -- and she got to do so in her native Poland. She's come up short against Joanna Jedrzejczyk and Claudia Gadelha, but it seems likely she'll earn future rematches with them.

Germaine de Randamie

10. Germaine de Randamie
Record: 7-3
Div.: Featherweight (UFC)
Last: W (UD5) Holly Holm, Feb. 11, 2017
Next: TBD

De Randamie remains in the top 10 pound-for-pound rankings, despite being stripped of her UFC featherweight title. She says she's headed back to bantamweight, after refusing to face Cris Justino. And her image is in need of rebuilding.