Latest UFC rankings update: Rick Story storms his way onto welterweight list after stunning Gunnar Nelson in Stockholm

The official Ultimate Fighting Championship (UFC) rankings have been updated following the UFC Fight Night 53 event in Stockholm, Sweden, and UFC Fight Night 54 in Halifax, Nova Scotia, Canada, both of which took place this past weekend (Sat., Oct. 4, 2014).

To check out complete results for each show click here and here.

Rory MacDonald solidified his spot as the No. 2-ranked welterweight in the world by knocking Tarec Saffiedine in the main event of UFC Fight Night 54 (video here). Meanwhile, in the headlining bout of UFC Fight Night 53, Rick Story outclassed Gunnar Nelson (watch it) to put an end to his unbeaten streak. The win was good enough to catapult "Horror" into the top 15, making his debut on the 170-pound list at No. 12.

While there wasn't and major movement in the divisions, the pound-for-pound list saw a plenty of fighters switch positions.

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

POUND-FOR-POUND
1. Jon Jones
2. Jose Aldo
3. Demetrious Johnson +1
4. Chris Weidman +1
5. Cain Velasquez -1
6. Anthony Pettis
7. Anderson Silva
8. Johny Hendricks  +1
9. Ronda Rousey -1
10. T.J. Dillashaw +1
11. Renan Barao - 1
12. Vitor Belfort
13. Alexander Gustafsson +1
14.  Dominick Cruz +1
15. Daniel Cormier -2

FLYWEIGHT
Champion: Demetrious Johnson
1. John Dodson
2. Joseph Benavidez
3. Ian McCall
4. Jussier Formiga
5. John Moraga
6. John Lineker +1
7. Ali Bagautinov -1
8. Chris Cariaso
9. Zach Makovsky
10. Timothy Elliott
11. Brad Pickett
12. Kyoji Horiguchi +1
13. Dustin Ortiz -1
14. Louis Gaudinot
15. Scott Jorgensen

BANTAMWEIGHT
Champion: T.J. Dillashaw
1. Renan Barao
2. Dominick Cruz
3. Urijah Faber
4. Rafael Assuncao
5. Michael McDonald
6. Takeya Mizugaki
7. Eddie Wineland
8. Iuri Alcantara
9. Johny Eduardo
10. Bryan Caraway
11. Francisco Rivera
12. Erik Perez
13. Alex Caceres
14. Mike Easton
15. Joe Soto

FEATHERWEIGHT
Champion: Jose Aldo
1. Chad Mendes
2. Cub Swanson
3. Frankie Edgar
4. Ricardo Lamas
5. Conor McGregor
6. Chan Sung Jung
7. Dustin Poirier
8. Dennis Bermudez
9. Nik Lentz
10. Dennis Siver +1
11. Jeremy Stephens -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. Donald Cerrone
5. Benson Henderson
6. Josh Thomson
7. Bobby Green
8. Myles Jury
9. Jim Miller
10. Eddie Alvarez
11. Michael Johnson
12. Edson Barboza
13. Jorge Masvidal
14. Rustam Khabilov
15. Nate Diaz *NR

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 +1 
8. Jake Ellenbeger -1
9. Dong Hyun Kim +1
9.. Tarec Saffiedine
11. Kelvin Gastelum
12. Rick Story *NR
13. Jordan Mein
14. Gunnar Nelson -2
15. Ryan LaFlare -1

MIDDLEWEIGHT
Champion: Chris Weidman
1. Anderson Silva
2. Jacare Souza
3. Vitor Belfort
4. Lyoto Machida
5. Luke Rockhold
6. Yoel Romero
7. Tim Kennedy
8. Gegard Mousasi
9. Michael Bisping
10. C.B. Dolloaway
11. Thales Leites
12. Costas Philippou
13. Mark Munoz +1
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
8. Dan Henderson
9. Mauricio Rua
10. Ovince Saint Preux
11. Jimi Manuwa
12. Rafael Cavalcante
13. Antonio Rogerio Nogueira +1
14. Vitor Belfort -1
15. Fabio Maldonado

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

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. Bethe Corriera
9. Amanda Nunes
10. Jessica Andrade
11. Julianna Pena
12. Germaine de Randamie
13. Leslie Smith
14. Raquel Pennington
15. Holly Holm *NR

Nothing quite ground breaking this time round, but that will change soon thanks to UFC Fight Night 179: "Aldo vs. Mendez," which goes down on Oct. 25, 2014, in Rio de Janeiro, Brazil, which will more than likely cause a shakeup in the 145-pound division.

Depending on the outcome, of course, as well as the "Notorious" special guest.

Until then, give us your thoughts on the latest UFC rankings in the comments section below.