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 May 16.

= champion

Cris Justino

1. Cris Justino
Record: 17-1
Div.: Featherweight (Invicta FC/UFC)
Last: W (TKO2) Lina Lansberg, Sept. 24, 2016
Next: TBD

Justino is now 2-0 in the UFC, to no one's surprise. The big question around Justino regards the long-term play. She's a budding star who lacks opponents because her best fighting weight is 145, a weight division UFC doesn't promote.

Joanna Jedrzejczyk

2. Joanna Jedrzejczyk
Record: 14-0
Div.: Strawweight (UFC)
Last: W (UD) Jessica Andrade, May 13, 2017
Next: TBD

If you consider Jedrzejczyk to be the best female fighter in the world, we certainly won't argue with you. That title comes down to two names and two names only: Jedrzejczyk and Justino. Whether you have Jedrzejczyk at No. 1 or No. 2, the overall point is the same. This woman is the cream of the crop and as close to unbeatable as they come.

Amanda Nunes

3. Amanda Nunes
Record: 14-4
Div.: Bantamweight (UFC)
Last: W (TKO1) Ronda Rousey, Dec. 30, 2016
Next: UFC 213 on July 8, vs. Valentina Shevchenko

In a matter of six months, Nunes dispatched two of the biggest stars in women's MMA -- Miesha Tate and Rousey -- and she did so in a matter of two rounds combined. Nunes is a finisher and a ferocious bantamweight champ.

Valentina Shevchenko

4. Valentina Shevchenko
Record: 14-2
Div.: Bantamweight (UFC)
Last: W (Sub2) Julianna Pena, Jan. 28, 2017
Next: UFC 213 on July 8, vs. Amanda Nunes

Shevchenko lost to Amanda Nunes in March 2016 but has quickly set up a rematch against the current champ by defeating Holly Holm and Julianna Pena. She'll be a live challenger in that fight, and let's not forget she's undersized for this division.

Claudia Gadelha

5. Claudia Gadelha
Record: 14-2
Div.: Strawweight (UFC)
Last: W (UD) Cortney Casey, Nov. 19, 2016
Next: UFC 212 on June 3, vs. Karolina Kowalkiewicz

Gadelha put up a good fight in her rematch against Joanna Jedrzejczyk in July, but things fell apart for her in the final two rounds. She's in that awkward spot of having two losses to the current champion of her weight class. She's clearly No. 2 -- and probably hoping another contender can knock off Jedrzejczyk and shake up the division.

Karolina Kowalkiewicz

6. Karolina Kowalkiewicz
Record: 10-1
Div.: Strawweight (UFC)
Last: L (UD) Joanna Jedrzejczyk, Nov. 12, 2016
Next: UFC 212 on June 3, vs. Claudia Gadelha

Kowalkiewicz came up short in her title bid against Jedrzejczyk at UFC 205, but she might have won a bigger fan base. Although she was visibly overmatched, Kowalkiewicz had several big moments, including a huge right hand in the fourth round -- probably the biggest shot ever landed on Jedrzejczyk.

Jessica Andrade

7. Jessica Andrade
Record: 16-6
Div.: Strawweight (UFC)
Last: L (UD) Joanna Jedrzejczyk, May 13, 2017
Next: TBD

Andrade didn't dethrone Jedrzejczyk at UFC 211, but she put up a more than respectable effort and got her money's worth against the champ in the fifth round. She'll fight for a UFC title again someday. Guaranteed.

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.

Germaine de Randamie

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

De Randamie sneaks into the top 10 pound-for-pound following her UFC featherweight title win over Holly Holm. Chances are high the wrong type of opponent could still expose de Randamie's weaknesses on the floor, but as long as things are standing, she's a handful.

Rose Namajunas

10. Rose NamajunasRecord: 6-3
Div.: Strawweight (UFC)
Last: W (Sub2) Michelle Waterson, April 15, 2017
Next: TBD

Namajunas has been on a fast track ever since her professional debut. At the age of just 24, she's knocking on the door of her second UFC strawweight title shot after an absolute dismantling of former Invicta FC champ Michelle Waterson.