United States

Pro Record

"A-Train"

12-5-0

Aaron Simpson

Aaron "A-Train" Simpson

Photo Source:   MMAWeekly.com

  • Given Name: Aaron Michael Simpson
  • Professional MMA Record: 12-5-0 (Win-Loss-Draw)
  • Nickname: A-Train
  • Current Streak: 2 Losses
  • Age: 39 | Date of Birth: 1974.07.20
  • Last Fight: March 23, 2013 in WSOF
  • Weight Class: Welterweight | Last Weigh-In: 171.0 lbs
  • Career Disclosed Earnings: $212,000 USD
  • Height: 6'0" (183cm) | Reach: 73.0" (185cm)
  • Gym/Affiliation: Power MMA & Fitness
  • Born: Gunnison, Colorado, United States
  • Fighter Pages: Sherdog  |  Wikipedia  |  The UG  |  UFC.com
  • Fighting out of: Phoenix, Arizona
  • Personal Pages: Twitter  |  Facebook  |  Official Site
  • College: Arizona State University
  • Foundation Style: N/A

Aaron Simpson Wiki Update Wiki

An NCAA Division I All-American for Arizona State University in 1996 and 1998, Aaron Simpson did not begin competing in mixed martial arts until 2007, at 33 years young.  Once he made the transition, however, it quickly became apparent that he was one of the most talented prospects to enter the sport in years. 


Simpson reeled off seven straight victories, defeating the likes of Ed Herman and Tom Lawlor in back-to-back stints with the WEC and UFC. In June 2010, Simpson's undefeated run came to a close courtesy of a rejuvenated Chris Leben, who knocked Simpson out in the second round at the TUF 11 Finale.  He would lose two in a row, before bouncing back with three consecutive wins. 


This streak would come to end in his next fight, as he lost to Ronny Markes via split decision.  The loss made A-Train re-evaluate his career and he ultimately decided to drop down to Welterweight, to compete with fighters more his own size.  Simpson's welterweight debut was a successful one, as he won a decision over Kenny Robertson.  


While his wrestling is undoubtedly his strong suit, Simpson has shown a natural ability to finish his opponents with strikes, having knocked out the majority of his victims.  Now being one of the bigger guys in his division instead of one of the smaller guys, Simpson is looking forward to a successful career in his new weight class.


Following a 2nd round knockout loss to Mike Pierce at UFC on FX: Browne vs Silva he would be cut from the UFC. Shortly after being cut it was announced that he was the newest fighter on the growing World Series of Fighting roster. He is set to face Josh Burkman at WSOF 2 on March 23rd, 2013. 

Last updated 02.16.2013, 12:01 PM ET
Wiki Contributors:

Tapology Consensus Rankings For Aaron Simpson

Aaron Simpson Welterweight Ranking History

Aaron Simpson MMA Fight Record

Professional Results Opponent Event Date
Loss | KO/TKO | Knee
3:04 Round 1 of 3
Josh Burkman
Ref: Dan Miragliotta
WSOF 2: Arlovski vs. Johnson
Main Card | Welterweight | 170 lbs
2013.03.23
Odds: -300 Moderate Favorite Upset Defeat | Weigh-In: 171.0 lbs
Loss | KO/TKO | Punches
0:29 Round 2 of 3, 5:29 Total
Mike Pierce
Ref: Daryl Guthmiller
UFC on FX 5: Browne vs. Silva
Preliminary Card | Welterweight | 170 lbs
2012.10.05
Odds: +135 Slight Underdog | Disclosed Pay: $25,000 Base | Weigh-In: 171.0 lbs
Win | Decision | Unanimous
3 Rounds, 15:00 Total
Kenny Robertson
Ref: Marcos Rosales
UFC on FUEL TV 4: Munoz vs. Weidman
Main Card | Welterweight | 170 lbs
2012.07.11
Odds: -345 Moderate Favorite | Weigh-In: 171.0 lbs
Cancelled Bout Jon Fitch UFC on FUEL TV 4 2012.07.11
Reason: Fitch Knee Injury
Loss | Decision | Split
3 Rounds, 15:00 Total
Ronny Markes
Ref: Jim Axtell
UFC on FUEL TV 1: Ellenberger vs. Sanchez
Main Card | Middleweight | 185 lbs
2012.02.15
Odds: +110 Near Even | Weigh-In: 186.0 lbs
Win | Decision | Unanimous
3 Rounds, 15:00 Total
Eric Schafer
Ref: Jacob Montalvo
UFC 136: Edgar vs Maynard 3
Preliminary Card | Middleweight | 185 lbs
2011.10.08
Odds: -440 Heavy Favorite | Weigh-In: 186.0 lbs
Cancelled Bout Nick Catone UFC 136 2011.10.08
Reason: Catone Torn Achilles
Win | Decision | Unanimous
3 Rounds, 15:00 Total
Brad Tavares
Ref: Josh Rosenthal
UFC 132: Cruz vs Faber II
Preliminary Card | Middleweight | 185 lbs
2011.07.02
Odds: -250 Moderate Favorite | Disclosed Pay: $34,000 ($17K Base, $17K Bonus) | Weigh-In: 185.0 lbs
Win | Decision | Unanimous
3 Rounds, 15:00 Total
Mario Miranda
Ref: Dan Miragliotta
UFC Fight Night 24: Nogueira vs. Davis
Preliminary Card | Middleweight | 185 lbs
2011.03.26
Odds: -220 Moderate Favorite | Disclosed Pay: $30,000 ($15K Base, $15K Bonus) | Weigh-In: 185.0 lbs
Loss | Decision | Unanimous
3 Rounds, 15:00 Total
Mark Munoz
Ref: Mark Fennell
UFC 123: Rampage vs. Machida
Preliminary Card | Middleweight | 185 lbs
2010.11.20
Odds: +110 Near Even | Weigh-In: 185.5 lbs
Loss | KO/TKO | Punches
4:17 Round 2 of 3, 9:17 Total
Chris Leben
Ref: Josh Rosenthal
The Ultimate Fighter 11 Finale
Main Card | Middleweight | 185 lbs
2010.06.19
Odds: -300 Moderate Favorite Upset Defeat | Disclosed Pay: $13,000 Base | Weigh-In: 186.0 lbs
#31 Best MMA Knockout of the Year 2010
The Ultimate Fighter 11 Finale Knockout of the Night
Win | Decision | Split
3 Rounds, 15:00 Total
Tom Lawlor
Ref: Kevin Mulhall
UFC Fight Night 20: Maynard vs Diaz
Main Card | Middleweight | 185 lbs
2010.01.11
Odds: -295 Moderate Favorite | Disclosed Pay: $52,000 ($11K Base, $11K Bonus, $30K Fight/Night) | Weigh-In: 185.0 lbs
#49 Best MMA Fight of the Year for 2010
UFC Fight Night 20 Fight of the Night
Win | KO/TKO | Injury
0:17 Round 2 of 3, 5:17 Total
Ed Herman
Ref: Yves Lavigne
UFC 102: Couture vs. Nogueira
Preliminary Card | Middleweight | 185 lbs
2009.08.29
Odds: -119 Near Even | Disclosed Pay: $18,000 ($9K Base, $9K Bonus) | Weigh-In: 185.0 lbs
Win | KO/TKO | Punches
1:40 Round 1 of 3
Tim McKenzie
Ref: Mario Yamasaki
UFC Fight Night 18: Condit vs. Kampmann
Preliminary Card | Middleweight | 185 lbs
2009.04.01
Odds: -203 Moderate Favorite | Disclosed Pay: $30,000 KO/Night | Weigh-In: 186.0 lbs
UFC Fight Night 18 Knockout of the Night
Win | KO/TKO | Punch
0:18 Round 1 of 3
David Avellan
Ref: Jorge Alonso
WEC 36: Faber vs Brown
Preliminary Card | Middleweight | 185 lbs
2008.11.05
Odds: -163 Slight Favorite | Disclosed Pay: $10,000 ($5K Base, $5K Bonus) | Weigh-In: 184.5 lbs
Win | KO/TKO | Punches Travis Degraw FMF 2 2008.05.31
Win | KO/TKO | Punches Scott Dingman Tuff-N-Uff 2008.02.01
Win | KO/TKO | Punches Tim Coulson PG 2 2007.10.05
Win | Submission | Choke Billy Onlewski ACC 2000.04.16

Aaron Simpson News View All

With one fight left on his contract, WSOF welterweight Josh Burkman wants to part ways with th... (15 days ago)
The first time I saw Chris Leben fight in person was at UFC 82, when he was facing "Legionariu... (3 months ago)
Chris Leben appeared on the MMA hour on Monday to announce his retirement from MMA competition... (3 months ago)
In 2009, Olympian wrestler Andy Hrovat decided he would go live in Russia to learn their wrest... (3 months ago)
A detailed glance at the match-up specs for the UFC Fight Night 35 co-main event that pits Lor... (3 months ago)
So far Uriah Hall lives as a figment of our imaginations. He was the boogeyman of The Ultimate... (4 months ago)

Videos & Highlights

    No Videos For This Fighter

Shop the latest from:

  • MMA Weekly : UFC on Fox 11 Play-by-Play: Jorge Masvidal vs. Pat Healy
  • MMA Weekly : UFC on Fox 11 Play-by-Play: Estevan Payan vs. Alex White
  • MMA Weekly : UFC on Fox 11 Play-by-Play: Caio Magalhaes vs. Luke Zachrich
  • MMA Weekly : UFC on Fox 11 Play-by-Play: Jordan Mein vs. Hernani Perpetuo
  • MMA Weekly : UFC on Fox 11 Play-by-Play: Dustin Ortiz vs. Ray Borg
  • MMA Weekly : UFC on Fox 11 Play-by-Play: Mirsad Bektic vs. Chas Skelly
  • MMA Weekly : UFC on Fox 11 Play-by-Play: Derrick Lewis vs. Jack May
  • MMA Weekly : UFC on Fox 11 Play-by-Play: Miesha Tate vs. Liz Carmouche
  • MMA Weekly : UFC on Fox 11 Play-by-Play: Fabricio Werdum vs. Travis Browne
  • MMA Junkie : Bellator 120 pay-per-view adds Ivanov-Volkov, Held-Freire, three more bouts
  • MMA Weekly : Bellator 117 Results: Douglas Lima Realizes Dream, Wins Welterweight Championship
  • MMA Weekly : UFC on Fox 11 Live Results and Play-by-Play
  • MMA Junkie : Bellator 117 results: Lima batters Hawn, claims vacant welterweight belt
  • MMA Weekly : UFC on Fox 11 Quick Results
  • MMA Junkie : Tom Wright says Canada could see more UFC events and ‘TUF’ seasons
  • MMA Junkie : June's WSOF 10 event moves from San Jose to Las Vegas
  • MMA Weekly : Majority Draw Radio: Guest Ray Sefo and the Jon Jones “Instagram Incident”
  • MMA Junkie : K.J. Noons mulling permanent move to 170, wants trilogy with Nick Diaz
  • MMAFighting.com : UFC on FOX 11 preview show
  • MMA Weekly : Tito Ortiz vs. Alexander Shlemenko Officially Signed for Bellator PPV Card