Latest UFC rankings update: Andrei Arlovski cracks Heavyweight Top 10 after Bigfoot Silva knockout

Meanwhile, Bigfoot continues his slide, but isn't out of top-ranked conversation ... yet.

For the second straight week, the Ultimate Fighting Championship (UFC) Heavyweight division rankings have experienced a major shake up.

Even though he wasn't in mixed martial arts (MMA) action last weekend, struggling standout Alistair Overeem continued to slide thanks to Andrei Arlovski, who scored a first round knockout of Antonio Silva on Saturday night (Sept. 13, 2013) at UFC Fight Night 51 from Nilson Nelson Gymnasium in Brasilia, Brazil (read details here), to vault himself seven slots higher.

"Bigfoot," meanwhile dropped five positions and nearly landed outside the Top 10.

No other super notable movements with the exception of Holly Holm, who made her debut in the women's Bantamweight division even though she has yet to compete inside the Octagon.

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

POUND-FOR-POUND

1. Jon Jones

2. Jose Aldo

3. Cain Velasquez

4. Demetrious Johnson

5. Chris Weidman

6. Anthony Pettis

7. Anderson Silva

8. Ronda Rousey

9. Johny Hendricks +1

10. Renan Barao -1

11. T.J. Dillashaw

12. Vitor Belfort

13. Alexander Gustafsson

14. Daniel Cormier

15. Gilbert Melendez

FLYWEIGHT

Champion : Demetrious Johnson

1. John Dodson

2. Joseph Benavidez

3. Ian McCall

4. Jussier Formiga

5. John Moraga

6. John Lineker

7. Ali Bagautinov

8. Chris Cariaso

9. Zach Makovsky

10. Timothy Elliott

11. Brad Pickett

12. Dustin Ortiz

13. Louis Gaudinot

14. Kyoji Horiguchi

15. Scott Jorgensen

BANTAMWEIGHT

Champion : T.J. Dillashaw

1. Renan Barao

2. Urijah Faber

3. Raphael Assuncao

4. Michael McDonald

5. Takeya Mizugaki +1

6. Eddie Wineland -1

7. Iuri Alcantara

8. Johnny Eduardo +1

9. Bryan Caraway -1

10. Alex Caceres

11. Francisco Rivera

12. Dominick Cruz

13. Erik Perez

14. Joe Soto

15. Mike Easton -1

FEATHERWEIGHT

Champion : Jose Aldo

1. Chad Mendes

2. Cub Swanson

3. Frankie Edgar

4. Ricardo Lamas

5. Dustin Poirier

6. Chan Sung Jung

7. Dennis Bermudez

8. Nik Lentz

9. Conor McGregor

10. Jeremy Stephens +1

11. Dennis Siver -1

12. Clay Guida

13. Darren Elkins

14. Charles Oliveira

15. Tatsuya Kawajiri

LIGHTWEIGHT

Champion : Anthony Pettis

1. Gilbert Melendez

2. Khabib Nurmagomedov

3. Rafael dos Anjos

4. Benson Henderson

5. Donald Cerrone

6. Josh Thomson

7. Bobby Green

8. Jim Miller

9. Myles Jury

10. Michael Johnson

11. Edson Barboza

12. Rustam Khabilov

13. Jorge Masvidal

14. Eddie Alvarez

15. Ross Pearson

WELTERWEIGHT

Champion : Johny Hendricks

1. Robbie Lawler

2. Rory MacDonald

3. Tyron Woodley

4. Carlos Condit

5. Matt Brown

6. Hector Lombard

7. Demian Maia

8. Jake Ellenberger

9. Tarec Saffiedine

10. Dong Hyun Kim

11. Kelvin Gastelum

12. Gunnar Nelson

13. Jordan Mein

14. Ryan LaFlare

15. Mike Pyle

MIDDLEWEIGHT

Champion : Chris Weidman

1. Anderson Silva

2. Jacare Souza

3. Vitor Belfort

4. Lyoto Machida

5. Luke Rockhold

6. Tim Kennedy

7. Michael Bisping

8. Gegard Mousasi -1

9. CB Dollaway

10. Yoel Romero

11. Thales Leites +1

12. Costas Philippou -1

13. Mark Munoz

14. Tim Boetsch -1

15. Francis Carmont

LIGHT HEAVYWEIGHT

Champion : Jon Jones

1. Alexander Gustafsson

2. Daniel Cormier

3. Rashad Evans

4. Glover Teixeira

5. Anthony Johnson

6. Phil Davis

7. Ryan Bader +1

8. Dan Henderson -1

9. Mauricio Rua

10. Ovince Saint Preux

11. Jimi Manuwa

12. Rafael Cavalcante

13. Vitor Belfort

14. Antonio Rogerio Nogueira

15. Fabio Maldonado

HEAVYWEIGHT

Champion : Cain Velasquez

1. Fabricio Werdum

2. Junior Dos Santos

3. Travis Browne

4. Stipe Miocic +1

5. Josh Barnett -1

6. Mark Hunt +1

7. Andrei Arlovski +7

8. Roy Nelson

9. Antonio Silva -5

10. Ben Rothwell -1

11. Alistair Overeem -1

12. Gabriel Gonzaga

13. Frank Mir -2

14. Stefan Struve -1

15. Minotauro Nogueira

WOMEN'S BANTAMWEIGHT

Champion : Ronda Rousey

1. Cat Zingano

2. Miesha Tate

3. Sara McMann

4. Alexis Davis

5. Sarah Kaufman

6. Jessica Eye

7. Liz Carmouche

8. Amanda Nunes

9. Bethe Correia

10. Jessica Andrade

11. Julianna Pena

12. Germaine de Randamie

13. Raquel Pennington

14. Leslie Smith

15. Holly Holm *NR

Interesting.

You can expect these numbers to change rather quickly as UFC Fight Night 52: "Hunt vs. Nelson" goes down this Saturday night (Sept. 20, 2014) on Fight Pass. To check out that entire fight card and line up click here.

Until then, let's hear your take in the comments section below.