UFC releases 1st set of official rankings

Pound-for-Pound
1 Anderson Silva
2 Jon Jones
3 Georges St-Pierre
4 Jose Aldo
5 Benson Henderson
6 Cain Velasquez
7 Dominick Cruz
8 Demetrious Johnson
9 Frankie Edgar
10 Dan Henderson

Heavyweight
Champion : Cain Velasquez
1 Junior dos Santos
2 Fabricio Werdum
3 Daniel Cormier
4 Antonio Silva
5 Frank Mir
6 Alistair Overeem
7 Antonio Rodrigo Nogueira
8 Roy Nelson
9 Stefan Struve
10 Shane Carwin

Light Heavyweight
Champion : Jon Jones
1 Dan Henderson
2 Lyoto Machida
3 Alexander Gustafsson
4 Glover Teixeira
5 Antonio Rogerio Nogueira
6 Rashad Evans
7 Mauricio Rua
8 Phil Davis
9 Ryan Bader
10 Gegard Mousasi

Middleweight
Champion : Anderson Silva
1 Chris Weidman
2 Vitor Belfort
3 Michael Bisping
4 Yushin Okami
5 Mark Munoz
6 Constantinos Philippou
7 Luke Rockhold
8 Hector Lombard
9 Alan Belcher
10 Tim Boetsch

Welterweight
Champion : Georges St-Pierre
1 Johny Hendricks
2 Carlos Condit
3 Nick Diaz
4 Rory MacDonald
5 Demian Maia
6 Jake Ellenberger
7 Martin Kampmann
8 Josh Koscheck
9 Jon Fitch
10 Tarec Saffiedine

Lightweight
Champion : Benson Henderson
1 Gilbert Melendez
2 Anthony Pettis
3 Gray Maynard
4 Nate Diaz
5 Jim Miller
6 Donald Cerrone
7 TJ Grant
8 Rafael dos Anjos
9 Joe Lauzon
10 Khabib Nurmagomedov

Featherweight
Champion : Jose Aldo
1 Chad Mendes
2 Ricardo Lamas
3 Chan Sung Jung
4 Frankie Edgar
5 Dennis Siver
6 Cub Swanson
7 Dustin Poirier
8 Nik Lentz
9 Erik Koch
10 Clay Guida

Bantamweight
Champion : Dominick Cruz
1 Renan Barao (Interim Champion)
2 Michael McDonald
3 Urijah Faber
4 Eddie Wineland
5 Brad Pickett
6 Brian Bowles
7 Rafael Assuncao
8 Scott Jorgensen
9 Mike Easton
10 Ivan Menjivar

Flyweight
Champion : Demetrious Johnson
1 Joseph Benavidez
2 John Dodson
3 Ian McCall
4 John Moraga
5 Jussier Da Silva
6 Louis Gaudinot
7 Chris Cariaso
8 John Lineker
9 Darren Uyenoyama
10 Ulysses Gomez

(Source: ufc.com)