Latest UFC rankings update: Anthony Pettis crashes featherweight top 10 following UFC on FOX 21

The Ultimate Fighting Championship (UFC) featherweight division has just been put on notice.

Former lightweight champion Anthony Pettis debuted in the No. 6 spot, thanks to a successful debut at 145 pounds last weekend (Sat., Aug. 27, 2016) in Vancouver, British Columbia, Canada, capturing a third-round submission win over Charles Oliveira.

See it again here.

Elsewhere on the charts, the field opened up at 170 pounds after former welterweight No. 1 contender Rory MacDonald set sail for Bellator MMA. "Red King" was previously ranked at No. 2, a spot that now belongs to the surging Stephen Thompson.

That's not all.

Here's what the latest ranking field looks like courtesy of UFC.com. Note: (+/- = movement in rankings, *NR = Not previously ranked).

POUND-FOR-POUND
1 Demetrious Johnson
2 Dominick Cruz
3 Daniel Cormier
4 Conor McGregor
5 Jose Aldo
6 Eddie Alvarez
7 Joanna Jedrzejczyk
8 Stipe Miocic
9 Tyron Woodley
10 Michael Bisping
11 Robbie Lawler
12 Luke Rockhold
13 Rafael Dos Anjos
14 TJ Dillashaw
15 Frankie Edgar

FLYWEIGHT
Champion: Demetrious Johnson
1 Joseph Benavidez
2 Henry Cejudo
3 Jussier Formiga
3 Kyoji Horiguchi
5 Ian McCall
6 Wilson Reis
7 Zach Makovsky
8 Ali Bagautinov
9 Louis Smolka
10 John Moraga
11 Matheus Nicolau
12 Dustin Ortiz
13 Justin Scoggins
14 Ray Borg
15 Sergio Pettis

BANTAMWEIGHT
Champion: Dominick Cruz
1 TJ Dillashaw
2 Urijah Faber
3 Raphael Assuncao
4 Bryan Caraway
5 John Lineker
6 Cody Garbrandt
7 Aljamain Sterling
8 Michael McDonald
9 John Dodson
10 Thomas Almeida
11 Eddie Wineland
12 Takeya Mizugaki
13 Jimmie Rivera
14 Johnny Eduardo
15 Frankie Saenz

FEATHERWEIGHT
Champion: Conor McGregor
1 Jose Aldo (Interim Champion)
2 Frankie Edgar
3 Max Holloway
4 Ricardo Lamas
5 Cub Swanson
6 Anthony Pettis *NR
7 Jeremy Stephens
8 Charles Oliveira -2
9 Dennis Bermudez -1
10 Brian Ortega -1
11 Hacran Dias -1
12 Yair Rodriguez -1
13 Darren Elkins -1
14 Dooho Choi -1
15 Mirsad Bektic -1

LIGHTWEIGHT
Champion: Eddie Alvarez
1 Khabib Nurmagomedov
2 Rafael Dos Anjos
3 Tony Ferguson
4 Nate Diaz +1
4 Edson Barboza
6 Donald Cerrone
7 Dustin Poirier +1
8 Michael Chiesa +1
9 Beneil Dariush +2
10 Michael Johnson
11 Will Brooks +1
12 Gilbert Melendez +2
13 Al Iaquinta
14 Rashid Magomedov +1
15 Evan Dunham *NR

WELTERWEIGHT
Champion: Tyron Woodley
1 Robbie Lawler
2 Stephen Thompson
3 Demian Maia +1
4 Carlos Condit +1
5 Kelvin Gastelum +1
6 Johny Hendricks +1
7 Donald Cerrone +1
8 Neil Magny
9 Lorenz Larkin +1
10 Dong Hyun Kim +1
11 Rick Story
12 Gunnar Nelson +1
13 Tarec Saffiedine +1
14 Matt Brown +1
15 Albert Tumenov *NR

MIDDLEWEIGHT
Champion: Michael Bisping
1 Luke Rockhold
2 Chris Weidman
3 Jacare Souza
4 Yoel Romero
5 Vitor Belfort
6 Anderson Silva
7 Robert Whittaker
8 Gegard Mousasi
9 Uriah Hall
10 Derek Brunson
11 Thales Leites
12 Dan Henderson
13 Tim Kennedy
14 Rafael Natal
15 Thiago Santos

LIGHT HEAVYWEIGHT
Champion: Daniel Cormier
1 Anthony Johnson
2 Alexander Gustafsson
3 Glover Teixeira
4 Ryan Bader
5 Ovince Saint Preux
6 Mauricio Rua
7 Rashad Evans
8 Jimi Manuwa
9 Antonio Rogerio Nogueira
10 Nikita Krylov
11 Corey Anderson
12 Ilir Latifi
13 Patrick Cummins
14 Misha Cirkunov
15 Gian Villante

HEAVYWEIGHT
Champion: Stipe Miocic
1 Fabricio Werdum
2 Cain Velasquez
3 Alistair Overeem
4 Junior Dos Santos
5 Ben Rothwell
6 Andrei Arlovski
7 Travis Browne
8 Mark Hunt
9 Josh Barnett
10 Derrick Lewis
11 Roy Nelson
12 Ruslan Magomedov
13 Stefan Struve
14 Francis Ngannou
15 Antonio Silva

WOMEN'S STRAWWEIGHT
Champion: Joanna Jedrzejczyk
1 Claudia Gadelha
2 Karolina Kowalkiewicz
3 Carla Esparza
4 Rose Namajunas
5 Tecia Torres
6 Jessica Andrade
7 Joanne Calderwood
8 Paige VanZant +2
9 Valerie Letourneau -1
10 Maryna Moroz -1
11 Jessica Aguilar +1
11 Michelle Waterson
13 Jessica Penne
14 Cortney Casey
15 Juliana Lima

WOMEN'S BANTAMWEIGHT
Champion: Amanda Nunes
1 Miesha Tate
2 Ronda Rousey
3 Valentina Shevchenko
4 Holly Holm
5 Julianna Pena
6 Cat Zingano
7 Sara McMann
8 Raquel Pennington
9 Liz Carmouche
10 Jessica Eye
11 Bethe Correia
12 Germaine de Randamie
13 Ashlee Evans-Smith
14 Katlyn Chookagian
15 Marion Reneau

There you have it.

You can expect these standings to change in less than a week -- particularly in the heavyweight division -- as the UFC Fight Night 93 event on UFC Fight Pass takes place this Saturday (Sept. 3, 2016) inside Barclaycard Arena in Hamburg, Germany (more on that card here).

Until then, let us know what you think of the latest rankings movement in the comments section below.