Latest UFC rankings: Josh Barnett rises, Gegard Mousasi falls following UFC Japan

Ultimate Fighting Championship (UFC) has updated its "official" fighter rankings in the wake of last weekend's UFC Fight Night 75 mixed martial arts (MMA) event on FOX Sports 1, which took place on Saturday night (Sept. 26, 2015) inside Saitama Super Arena in Saitama, Japan.

For complete "Barnett vs. Nelson" results and play-by-play click here.

As expected, former UFC heavyweight champion Josh Barnett enjoyed a bump in the 265-pound rankings, moving up to No. 6 after outpointing Roy Nelson in their five-round headliner (highlights). "Big Country" slips to No. 12 after what amounts to his third straight loss.

Elsewhere on the card, resurgent middleweight striker Uriah Hall debuted in the No. 10 spot by thrashing longtime veteran Gegard Mousasi (watch it). In defeat, "The Dreamcatcher" plummets to No. 8 and further distances himself from the 185-pound title.

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 Jose Aldo
2 Demetrious Johnson
3 Chris Weidman
4 Ronda Rousey
5 TJ Dillashaw
6 Robbie Lawler +1
7 Fabricio Werdum -1
8 Rafael dos Anjos
9 Daniel Cormier
10 Cain Velasquez
11 Conor McGregor
12 Anthony Pettis
13 Frankie Edgar
14 Joanna Jedrzejczyk +1
15 Johny Hendricks -1

FLYWEIGHT
Champion: Demetrious Johnson
1 John Dodson
1 Joseph Benavidez +1
3 Jussier Formiga
4 Ian McCall
5 Henry Cejudo
6 John Moraga
7 Kyoji Horiguchi
8 Zach Makovsky
9 Dustin Ortiz
10 Chris Cariaso
11 Ray Borg +1
12 Wilson Reis -1
13 Chico Camus
14 Ali Bagautinov +1
15 John Lineker -1

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

FEATHERWEIGHT
Champion: Jose Aldo
1 Conor McGregor (Interim Champion)
2 Frankie Edgar
3 Chad Mendes
4 Ricardo Lamas
5 Max Holloway
6 Cub Swanson
7 Charles Oliveira
8 Jeremy Stephens
9 Dennis Bermudez
10 Nik Lentz
11 Clay Guida
12 Hacran Dias
13 Tatsuya Kawajiri
14 Darren Elkins
15 Dennis Siver

LIGHTWEIGHT
Champion: Rafael dos Anjos
1 Anthony Pettis
2 Donald Cerrone
3 Khabib Nurmagomedov
4 Eddie Alvarez
5 Michael Johnson
6 Benson Henderson +1
7 Edson Barboza -1
8 Tony Ferguson +1
9 Myles Jury -1
10 Beneil Dariush
11 Al Iaquinta
12 Bobby Green
13 Dustin Poirier
14 Nate Diaz
15 Jim Miller *NR

WELTERWEIGHT
Champion: Robbie Lawler
1 Johny Hendricks
2 Rory MacDonald
3 Tyron Woodley
4 Carlos Condit
5 Matt Brown
6 Demian Maia
7 Dong Hyun Kim
8 Stephen Thompson
9 Tarec Saffiedine
10 Rick Story
11 Gunnar Nelson
12 Neil Magny
13 Thiago Alves
14 Jake Ellenberger
15 Kelvin Gastelum

MIDDLEWEIGHT
Champion: Chris Weidman
1 Luke Rockhold
2 Jacare Souza
3 Yoel Romero
4 Vitor Belfort
5 Lyoto Machida
6 Tim Kennedy +1
7 Michael Bisping +1
8 Gegard Mousasi -2
9 Thales Leites
10 Uriah Hall *NR
11 CB Dollaway -1
12 Dan Henderson -1
13 Derek Brunson
14 Robert Whittaker -2
15 Roan Carneiro -1

LIGHT HEAVYWEIGHT
Champion: Daniel Cormier
1 Anthony Johnson
2 Alexander Gustafsson
3 Glover Teixeira
4 Ryan Bader
5 Rashad Evans
6 Ovince Saint Preux
7 Mauricio Rua
8 Jimi Manuwa
9 Patrick Cummins +1
10 Rampage Jackson -1
11 Antonio Rogerio Nogueira
12 Fabio Maldonado
13 Rafael Cavalcante
14 Corey Anderson +1
15 Tom Lawlor *NR

HEAVYWEIGHT
Champion: Fabricio Werdum
1 Cain Velasquez
2 Junior Dos Santos
3 Stipe Miocic
4 Andrei Arlovski
5 Travis Browne
6 Josh Barnett +2
7 Ben Rothwell -1
8 Mark Hunt -1
9 Alistair Overeem
10 Frank Mir
11 Antonio Silva +1
12 Roy Nelson -1
13 Matt Mitrione
14 Stefan Struve
15 Alexey Oliynyk

WOMEN'S STRAWWEIGHT
Champion: Joanna Jedrzejczyk
1 Claudia Gadelha
2 Carla Esparza
3 Jessica Penne
4 Rose Namajunas
5 Tecia Torres
6 Paige VanZant
7 Randa Markos
8 Joanne Calderwood
9 Valerie Letourneau +1
10 Maryna Moroz -1
11 Michelle Waterson
12 Jessica Aguilar
13 Felice Herrig
14 Juliana Lima
15 Aisling Daly

WOMEN'S BANTAMWEIGHT
Champion: Ronda Rousey
1 Miesha Tate
2 Cat Zingano
3 Alexis Davis
4 Amanda Nunes
5 Sarah Kaufman
6 Jessica Eye
7 Sara McMann
8 Holly Holm
9 Bethe Correia
10 Liz Carmouche
11 Marion Reneau
12 Julianna Pena
13 Raquel Pennington
14 Germaine de Randamie +1
15 Jessica Andrade -1

There you have it.

You can expect these standings to change -- especially in the light heavyweight division -- when the UFC 192 pay-per-view (PPV) event goes down this Saturday night (Oct. 3, 2015) inside Toyota Center in Houston, Texas. To check out the entire "Cormier vs. Gustafsson" fight card and line up click here.

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