Who's on top now?

Welcome to NBCSports.com's latest mixed martial arts rankings.

After a loaded start to the year, we experienced a ton of movement in our rankings. Check ‘em out below.

HEAVYWEIGHT
1. Junior dos Santos
2. Cain Velasquez
3. Alistair Overeem
4. Frank Mir
5. Fabricio Werdum
6. Josh Barnett
7. Shane Carwin
8. Antonio Rodrigo Nogueira
9. Daniel Cormier
10. Roy Nelson

LIGHT HEAVYWEIGHT
1. Jon Jones
2. Rashad Evans
3. Dan Henderson
4. Mauricio "Shogun" Rua
5. Quinton Jackson
6. Lyoto Machida
7. Forrest Griffin
8. Phil Davis 
9. Alexander Gustafsson
10. Antonio Rogerio Nogueira

MIDDLEWEIGHT
1. Anderson Silva
2. Chael Sonnen
3. Yushin Okami
4. Mark Munoz
5. Vitor Belfort
6. Michael Bisping
7. Chris Weidman
8. Demian Maia
9. Brian Stann
10. Alan Belcher

WELTERWEIGHT
1. Georges St-Pierre
2. Carlos Condit
3. Nick Diaz
4. Josh Koscheck   
5. Jake Ellenberger
6. Johny Hendricks
7. Jon Fitch
8. Jake Shields
9. Diego Sanchez
10. Martin Kampmann

LIGHTWEIGHT
1. Frankie Edgar
2. Gray Maynard
3. Gilbert Melendez
4. Ben Henderson
5. Nate Diaz
6. Shinya Aoki
7. Jim Miller
8. Donald Cerrone
9. Clay Guida
10. Anthony Pettis

FEATHERWEIGHT
1. Jose Aldo
2. Chad Mendes
2. Hatsu Hioki
4. Kenny Florian
5. Dustin Poirier
6. Pat Curran
7. Diego Nunes
8. Erik Koch
9. Bart Palaszewski
10. Marlon Sandro

BANTAMWEIGHT
1. Dominick Cruz
2. Urijah Faber
3. Joseph Benavidez
4. Renan Barao
5. Brian Bowles
6. Demetrious Johnson
7. Miguel Torres
8. Scott Jorgensen
9. Brad Pickett
10. Michael McDonald

MALE POUND-FOR-POUND
1. Anderson Silva
2. Jon Jones
3. Georges St-Pierre
4. Frankie Edgar
5. Jose Aldo
6. Dominick Cruz
7. Rashad Evans
8. Dan Henderson
9. Junior dos Santos
10. Gilbert Melendez

FEMALE POUND-FOR-POUND
1. Megumi Fujii
2. Tara LaRosa
3. Miesha Tate
4. Zoila Gurgel
5. Marloes Coenen
6. Sarah Kaufman
7. Ronda Rousey
8. Rosi Sexton
9. Shayna Baszler
10. Hiroko Yamanaka