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Stephan Bonnar
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THE AMERICAN PSYCHO

Stephan Bonnar

United States flag
United States, Hammond, Indiana
One Kick's Gym
Age: 49
15
Wins
9
Losses
0
DRAWS
Last fight

Loss

Stephan BonnarStephan Bonnar
vs

KO/TKO (R1 · 4:40)UFC 153: Silva vs Bonnar

  • Pro record 15-9-0
  • UFC record 8-7-0
  • Outside the UFC 7-2-0
agentmma.com

Fighter Details

Height:
6'4" (193 cm)
Weight:
205 lbs (93 kg)
Reach:
79" (201 cm)
Stance:
Orthodox
DOB:
4th Apr. 1977
Age:
49
AI Rank:
Unranked

UFC statistics

UFC round data: 15 bouts · through 2012-10-13

2.65
Significant Strikes Landed per Min
40%
Significant Striking Accuracy
2.89
Significant Strikes Absorbed per Min
1.5
Average Takedowns per 15 Min
41%
Takedown Accuracy
1.1
Submission Average per 15 Min
ufc logo

UFC Record Breakdown

8-7UFC Record
KO/TKO (13%)
Sub (13%)
Decision (27%)
Losses (47%)

Performance Breakdown

Striking Accuracy40%
Takedown Accuracy41%
Takedown Defense58%

Heuristic ratings

Heuristic scores · 0–100

Fight IQ29/100

15 UFC bouts · 50 division peers

Data through 2012-10-13

Cardio68/100

10 bouts reaching round 3

Data through 2011-11-19

How these scores are calculated

Fight IQ = 40% striking-accuracy percentile + 30% striking-defense percentile + 30% takedown-defense percentile within the division.

Requires 3 UFC bouts, 15 measured minutes, at least 10 division peers, 100 strike attempts, 100 opponent strike attempts and 10 opponent takedown attempts.

Cardio = 100 × the median late/early significant-strike attempt rate ratio, capped at 100. Compare rounds 3+ with rounds 1–2 within each bout. Requires 3 eligible bouts with at least 60 late-round seconds each. 100 means maintained or higher late pace.

Fight IQ summarizes accuracy and defense; cardio summarizes retained pace. Style, opponents and grappling affect both. These scores do not measure intelligence, physical fitness or win probability.

Formula v1

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Frequently asked questions

What is Stephan Bonnar's professional MMA record?

Stephan Bonnar has a professional MMA record of 15-9-0 (wins-losses-draws).

What is Stephan Bonnar's UFC record?

Stephan Bonnar's UFC record is 8-7-0 (wins-losses-draws), and 7-2-0 in professional fights outside the UFC.

Who does Stephan Bonnar fight next?

Stephan Bonnar does not have a fight currently scheduled.

How old is Stephan Bonnar?

Stephan Bonnar is 49 years old, born April 4, 1977.

How tall is Stephan Bonnar?

Stephan Bonnar stands 193 cm (6'4") tall, with a 201 cm (79") reach.

Where is Stephan Bonnar from?

Stephan Bonnar is from United States.

What is Stephan Bonnar's nickname?

Stephan Bonnar is known as "The American Psycho".

When was Stephan Bonnar's last fight?

Stephan Bonnar last fought on October 13, 2012 at UFC 153: Silva vs Bonnar, losing to Anderson Silva by KO/TKO in round 1.

What were the scorecards for Stephan Bonnar vs Kyle Kingsbury?

Stephan Bonnar defeated Kyle Kingsbury by unanimous decision at UFC 139: Shogun vs Henderson on November 19, 2011. The official scorecards were Steve English 30-27, Ralph McKnight 30-27, Jackie Denkin 30-25 (winner's score first).

What were the scorecards for Stephan Bonnar vs Igor Pokrajac?

Stephan Bonnar defeated Igor Pokrajac by unanimous decision at The Ultimate Fighter: Team GSP vs Team Koscheck Finale on December 4, 2010. All three judges (Illegal Strikes by Each FighterCecil Peoples, Glenn Trowbridge, Tony Weeks) scored the fight 29-26 in Stephan Bonnar's favor.

Stephan Bonnar scouting report

Stephan Bonnar (United States), a light heavyweight, went 15-9 as a pro and 8-7 in the UFC (7-2 outside it). He debuted at The Ultimate Fighter: Team Couture vs. Team Liddell Finale on April 9, 2005; two of his eight UFC wins came by KO/TKO, two by submission and four by decision. His reach of 79 inches is 2.5 inches longer than the light heavyweight average (76.5 inches). Last fight: KO/TKO loss to Anderson Silva, then 15-0 in the UFC, on October 13, 2012 (UFC 153: Silva vs Bonnar).

Built from AgentMMA's UFC database (as of November 7, 2026); not AI-written.

Stephan Bonnar vs the light heavyweight average

Computed by AgentMMA from the round-by-round stats of 15 UFC bouts (2:53:23 of fight time).

StatBonnarDivision averagePercentile
Significant strikes landed per minute2.7459 in 2:53:23420
Significant strike accuracy39.7%459 of 1,155 landed50.5%0
Significant strikes absorbed per minute2.9501 in 2:53:233.724
Significant strike defense52.4%552 of 1,053 avoided50.1%60
Takedowns per 15 minutes1.517 in 2:53:231.268
Takedown accuracy41.5%17 of 41 landed33.9%73
Takedown defense58.5%31 of 53 stopped66.9%35
Submission attempts per 15 minutes1.113 in 2:53:230.392
Knockdowns per 15 minutes0.22 in 2:53:230.524
Control time34.3%59:29 of 2:53:2318.5%88
Average fight time11:3415 bouts9:0884
Height193 cm76″189 cm74.5″
Reach201 cm79″194 cm76.5″
  • Division average and percentile: 50 active light heavyweight fighters with a UFC bout in the last 3 years, at least 3 UFC bouts and 15 minutes of UFC fight time.
  • Percentile: the share of those fighters whose value is lower (ties count half). For every stat, a higher percentile means a higher number.

Related MMA Lab pages

UFC fight record

UFC record: 8-7

Every UFC bout, newest first. Open a bout for the full result, judges' scorecards and round-by-round stats.

  1. LUFC record after this bout: 8-7-0
    Stephan Bonnar
    Stephan Bonnar
    vs
    Anderson Silva
    Anderson Silva
    Pro record now: 34-11-0 (1 NC)UFC record entering: 15-0-0
    KO/TKOR1 4:40UFC 153: Silva vs BonnarOct 13, 2012Result & stats
  2. WUFC record after this bout: 8-6-0
    Stephan Bonnar
    Stephan Bonnar
    vs
    Kyle Kingsbury
    Kyle Kingsbury
    Pro record now: 11-6-0 (1 NC)UFC record entering: 4-1-0
    DECUFC 139: Shogun vs HendersonNov 19, 2011Result & stats
  3. WUFC record after this bout: 7-6-0
    Stephan Bonnar
    Stephan Bonnar
    vs
    Igor Pokrajac
    Igor Pokrajac
    Pro record now: 28-13-0 (1 NC)UFC record entering: 1-2-0
    DECThe Ultimate Fighter: Team GSP vs Team Koscheck FinaleDec 4, 2010Result & stats
  4. WUFC record after this bout: 6-6-0
    Stephan Bonnar
    Stephan Bonnar
    vs
    Krzysztof Soszynski
    Krzysztof Soszynski
    Pro record now: 26-12-1UFC record entering: 4-1-0
    KO/TKOR2 3:08UFC 116: Lesnar vs CarwinJul 3, 2010Result & stats
  5. LUFC record after this bout: 5-6-0
    Stephan Bonnar
    Stephan Bonnar
    vs
    Krzysztof Soszynski
    Krzysztof Soszynski
    Pro record now: 26-12-1UFC record entering: 3-1-0
    KO/TKOR3 1:04UFC 110: Nogueira vs VelasquezFeb 20, 2010Result & stats
  6. LUFC record after this bout: 5-5-0
    Stephan Bonnar
    Stephan Bonnar
    vs
    Mark Coleman
    Mark Coleman
    Pro record now: 16-10-0UFC record entering: 6-4-0
    DECUFC 100Jul 11, 2009Result & stats
  7. LUFC record after this bout: 5-4-0
    Stephan Bonnar
    Stephan Bonnar
    vs
    Jon Jones
    Jon Jones
    Pro record now: 28-1-0 (1 NC)UFC record entering: 1-0-0
    DECUFC 94: St-Pierre vs Penn 2Jan 31, 2009Result & stats
  8. WUFC record after this bout: 5-3-0
    Stephan Bonnar
    Stephan Bonnar
    vs
    Eric Schafer
    Eric Schafer
    Pro record now: 14-8-2UFC record entering: 1-1-0
    KO/TKOR2 2:47UFC 77: Hostile TerritoryOct 20, 2007Result & stats
  9. WUFC record after this bout: 4-3-0
    Stephan Bonnar
    Stephan Bonnar
    vs
    Mike Nickels
    Mike Nickels
    Pro record now: 9-5-0UFC record entering: 1-0-0
    SUBR1 2:14UFC 73: StackedJul 7, 2007Result & stats
  10. LUFC record after this bout: 3-3-0
    Stephan Bonnar
    Stephan Bonnar
    vs
    Forrest Griffin
    Forrest Griffin
    Pro record now: 19-7-0UFC record entering: 3-1-0
    DECUFC 62: Liddell vs SobralAug 26, 2006Result & stats
  11. LUFC record after this bout: 3-2-0
    Stephan Bonnar
    Stephan Bonnar
    vs
    Rashad Evans
    Rashad Evans
    Pro record now: 19-8-1UFC record entering: 2-0-0
    DECUFC Fight Night 5Jun 28, 2006Result & stats
  12. WUFC record after this bout: 3-1-0
    Stephan Bonnar
    Stephan Bonnar
    vs
    Keith Jardine
    Keith Jardine
    Pro record now: 17-11-2UFC record entering: 2-0-0
    DECUFC Fight Night 4Apr 6, 2006Result & stats
  13. WUFC record after this bout: 2-1-0
    Stephan Bonnar
    Stephan Bonnar
    vs
    James Irvin
    James Irvin
    Pro record now: 17-10-0 (2 NC)UFC record entering: 1-1-0
    SUBR1 4:30UFC Fight Night 3Jan 16, 2006Result & stats
  14. WUFC record after this bout: 1-1-0
    Stephan Bonnar
    Stephan Bonnar
    vs
    Sam Hoger
    Sam Hoger
    Pro record now: 10-4-0UFC record entering: 1-0-0
    DECUFC Fight Night 1Aug 6, 2005Result & stats
  15. LUFC record after this bout: 0-1-0
    Stephan Bonnar
    Stephan Bonnar
    vs
    Forrest Griffin
    Forrest Griffin
    Pro record now: 19-7-0UFC record entering: 0-0-0
    DECThe Ultimate Fighter: Team Couture vs. Team Liddell FinaleApr 9, 2005Result & stats

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