17	Cain Velasquez (2)	UFC 155 Las Vegas, NV, USA	Dec 29, 2012 (incumbent)	111 days (496 days) (incumbent)

Born	Cain Velasquez (1982-07-28) July 28, 1982 (age 30) Salinas, California, U.S.
Nationality	American
Height	6 ft 1 in (1.85 m)[1]
Weight	240 lb (109 kg; 17 st 2 lb)
Division	Heavyweight
Reach	77 in (196 cm)
Style	Wrestling, Kickboxing
Fighting out of	San Jose, California
Team	American Kickboxing Academy
Trainer	Muay Thai: Javier Mendez Strength: Joe Grosso Jiu-Jitsu: Leandro Vieira Boxing: Arturo Mata Wrestling: Daniel Cormier
Rank	brown belt in Brazilian Jiu-Jitsu
Wrestling	NCAA Division I Wrestling
Years active	2006–present (MMA)
Mixed martial arts record
Total	12
Wins	11
By knockout	9
By decision	2
Losses	1
By knockout	1
University	Arizona State University
Spouse	Michelle
Children	Coral
Notable school(s)	Kofa High School

16	Junior dos Santos	UFC on Fox 1 Anaheim, CA, USA	Nov 12, 2011	413 days	1. def. Frank Mir at UFC 146 on May 26, 2012

Mixed martial arts record
Wins	15
Losses	2

15	Cain Velasquez	UFC 121 Anaheim, CA, USA	Oct 23, 2010	385 days	No title defenses

Mixed martial arts record
Wins	10
Losses	1

14	Brock Lesnar	UFC 91 Las Vegas, NV, USA	Nov 15, 2008	707 days	1. def. Frank Mir at UFC 100 on Jul 11, 2009 2. def. Shane Carwin at UFC 116 on Jul 3, 2010

Mixed martial arts record
Wins	5
Losses	3

13	Randy Couture (3)	UFC 68 Columbus, OH, USA	Mar 3, 2007	623 days (1,113+ days)	1. def. Gabriel Gonzaga at UFC 74 on Aug 25, 2007

Mixed martial arts record
Wins	19
Losses	11

12	Tim Sylvia (2)	UFC 59 Anaheim, CA, USA	Apr 15, 2006	322 days (551 days)	1. def. Andrei Arlovski at UFC 61 on Jul 8, 2006 2. def. Jeff Monson at UFC 65 on Nov 18, 2006

Mixed martial arts record
Wins	30
Losses	7

11	Andrei Arlovski promoted to undisputed champion	—	Aug 12, 2005	246 days	1. def. Paul Buentello at UFC 55 on Oct 7, 2005

Mixed martial arts record
Wins	17
Losses	9

10	Frank Mir def. Tim Sylvia	UFC 48 Las Vegas, NV, USA	Jun 19, 2004	419 days	No title defenses
Mir was stripped of the title on August 12, 2005 due to injuries sustained in a road accident.

Mixed martial arts record
Wins	16
Losses	6

9	Tim Sylvia	UFC 41 Atlantic City, NJ, USA	Feb 28, 2003	229 days	1. def. Gan McGee at UFC 44 on Sep 26, 2003

8	Ricco Rodriguez def. Randy Couture	UFC 39 Uncasville, CT, USA	Sep 27, 2002	154 days	No title defenses

Mixed martial arts record
Wins	48
Losses	17

7	Josh Barnett	UFC 36 Las Vegas, NV, USA	Mar 22, 2002	126 days
Barnett was stripped of the title on July 26, 2002 after testing positive for anabolic steroids in a post-fight drug test.

Mixed martial arts record
Wins	31
Losses	35

6	Randy Couture (2)	UFC 28 Atlantic City, NJ, USA	Nov 17, 2000	490 days (490+ days)	1. def. Pedro Rizzo at UFC 31 on May 4, 2001 2. def. Pedro Rizzo at UFC 34 on Nov 2, 2001

5	Kevin Randleman def. Pete Williams	UFC 23 Tokyo, Japan	Nov 19, 1999	364 days	1. def. Pedro Rizzo at UFC 26 on Jun 9, 2000

Mixed martial arts record
Wins	17
Losses	16

4	Bas Rutten def. Kevin Randleman	UFC 20 Birmingham, AL, USA	May 7, 1999	? days	No title defenses
Rutten vacated the title in June 1999 in order to drop down to Light heavyweight. He retired soon after due to training injuries.

Mixed martial arts record
Wins	28
Losses	4

3	Randy Couture	UFC Japan Yokohama, Japan	Dec 21, 1997	? days	No title defenses
Couture was stripped of the title in January 1998 when he left the UFC due to a contract dispute.

2	Maurice Smith	UFC 14 Birmingham, AL, USA	Jul 27, 1997	147 days	1. def. David Abbott at UFC 15 on Oct 17, 1997

Mixed martial arts record
Wins	13
Losses	13

1	Mark Coleman def. Dan Severn	UFC 12 Dothan, AL, USA	Feb 7, 1997	140 days	No title defenses

Mixed martial arts record
Wins	16
Losses	10