MMA rankings: Big shakeup after wild weekend in Las Vegas

After a wild weekend that featured three Ultimate Fighting Championship cards in three nights, this week's CoveringTheCage.com rankings look significantly different.

The most significant shakeups occurred in the featherweight and middleweight divisions where new champions were crowned on Saturday night at MGM Grand.

Conor McGregor takes over the top spot at 145 pounds after a 13-second knockout of Jose Aldo and Luke Rockhold is the new No. 1 at 185 pounds following a fourth-round knockout of Chris Weidman.

McGregor (No. 4) and Rockhold (No. 7) both made significant moves in the overall rankings, as well.

Nearly every division had a fighter in action with nearly 70 UFC fighters competing this past weekend, so there was movement all around the rankings.

Stay tuned each Monday for the latest updates and keep in mind, while the ranked weight classes are those used by the UFC, fighters competing outside the organization are eligible.

MEN

Heavyweight

Fabricio Werdum

Cain Velasquez

Junior dos Santos

Stipe Miocic

Andrei Arlovski

Travis Browne

Alistair Overeem

Ben Rothwell

Josh Barnett

Mark Hunt

Light Heavyweight

Jon Jones

Daniel Cormier

Anthony Johnson

Ryan Bader

Alexander Gustafsson

Phil Davis

Glover Teixeira

Liam McGeary

Rashad Evans

Ovince St. Preux

Middleweight

Luke Rockhold

Chris Weidman

Yoel Romero

Ronaldo "Jacare" Souza

Vitor Belfort

Lyoto Machida

Tim Kennedy

Michael Bisping

Gegard Mousasi

Robert Whittaker

Welterweights

Robbie Lawler

Rory MacDonald

Carlos Condit

Johny Hendricks

Ben Askren

Tyron Woodley

Hector Lombard

Matt Brown

Demian Maia

Stephen Thompson

Lightweights

Rafael dos Anjos

Anthony Pettis

Khabib Nurmagomedov

Donald Cerrone

Benson Henderson

Tony Ferguson

Eddie Alvarez

Gilbert Melendez

Will Brooks

Michael Johnson

Featherweight

Conor McGregor

Jose Aldo

Frankie Edgar

Max Holloway

Chad Mendes

Ricardo Lamas

Daniel Straus

Cub Swanson

Charles Oliveira

Patricio Freire

Bantamweights

TJ Dillashaw

Dominick Cruz

Renan Barao

Urijah Faber

Raphael Assuncao

Aljamain Sterling

Bibiano Fernandes

Marlon Moraes

Marcos Galvao

John Lineker

Flyweights

Demetrious Johnson

Joseph Benavidez

John Dodson

Henry Cejudo

Ali Bagautinov

Jussier Formiga

Kyoji Horiguchi

John Moraga

Dustin Ortiz

Zach Makovsky

WOMEN

Bantamweight

Holly Holm

Ronda Rousey

Miesha Tate

Amanda Nunes

Alexis Davis

Julianna Pena

Cat Zingano

Jessica Eye

Sara McMann

Sarah Kaufman

Strawweight

Joanna Jedrzejczyk

Claudia Gadelha

Rose Namajunas

Jessica Aguilar

Valerie Letourneau

Tecia Torres

Carla Esparza

Paige VanZant

Jessica Penne

Randa Markos

OVERALL

Pound for Pound