Dave Jansen (20-4, 11) was born in Portland, Oregon, U.S. on August 21, 1979. At the age of 28 years on September 22, 2007, he made his professional MMA debut against Alejandro Alvarez, winning the fight via 1st-round submission.
Jansen's last fight was a 3-round unanimous decision loss to Marcin Held at Bellator 155 at age 36 on May 20, 2016. He retired on a 2-fight losing streak.
Some of Dave Jansen's best fights have been against Yui Chul Nam, Richard Crunkilton, Marcin Held, Rick Hawn, Ricardo Tirloni, Flavio Alvaro and Amirkhan Mazihov.
Jansen has 4 losses on his MMA record.
| # | Date | Opponent | Promotion | Weight | Round | Method | Result |
|---|---|---|---|---|---|---|---|
24  | May 20, 2016 36 years, 8 months 20-4 (11) | 24 years, 4 months 21-4 (16) | Bellator | LT | 3 | UD | LOSS |
23  | Apr 10, 2015 35 years, 7 months 20-3 (11) | 28 years, 6 months 15-1 (9) | Bellator | LT | 5 | UD | LOSS For Bellator lightweight title |
22  | Oct 24, 2014 35 years, 2 months 20-2 (11) | 38 years, 1 months 18-3 (11) | Bellator | LT | 3 | UD | WIN |
21 | Mar 21, 2013 33 years, 7 months 19-2 (11) | 21 years, 2 months 15-2 (11) | Bellator | LT | 3 | UD | WIN |
20  | Nov 16, 2012 33 years, 2 months 18-2 (11) | 29 years, 9 months 15-2 (13) | Bellator | LT | 3 | SD | WIN |
19 | Oct 19, 2012 33 years, 1 months 17-2 (11) | Magomed Saadulaev | Bellator | LT | 3 | SUB | WIN Guillotine choke |
18 | Mar 23, 2012 32 years, 7 months 16-2 (10) | Jacob Kirwan | Bellator | 3 | UD | WIN | |
17 | Nov 12, 2011 32 years, 2 months 15-2 (10) | Ashkan Morvari | Bellator | 2 | SUB | WIN Rear-naked choke | |
16 | Apr 2, 2011 31 years, 7 months 14-2 (9) | Scott McAfee | Bellator | 1 | SUB | WIN D'arce choke | |
15  | Aug 18, 2010 30 years, 11 months 13-2 (8) | 28 years, 2 months 8-1 (4) | WEC | 3 | UD | LOSS | |
14  | Jan 10, 2010 30 years, 4 months 13-1 (8) | 32 years, 4 months 5-0-1 (5) | WEC | 3 | UD | LOSS | |
13  | Oct 10, 2009 30 years, 1 months 13-0 (8) | 29 years, 10 months 18-2 (15) | WEC | 3 | UD | WIN | |
12 | Jul 4, 2009 29 years, 10 months 12-0 (8) | Amirkhan Mazihov | M-1 | 1 | SUB | WIN Guillotine choke | |
11  | Apr 29, 2009 29 years, 8 months 11-0 (7) | 27 years, 9 months 8-1 (6) | M-1 | 2 | UD | WIN | |
10 | Feb 21, 2009 29 years, 6 months 10-0 (7) | Flavio Alvaro | M-1 | 2 | UD | WIN | |
9 | Feb 6, 2009 29 years, 5 months 9-0 (7) | Matt Lee | 1 | SUB | WIN Anaconda choke | ||
8 | Dec 13, 2008 29 years, 3 months 8-0 (6) | Corey Mahon | 1 | SUB | WIN Rear-naked choke | ||
7 | Sep 19, 2008 29 years 7-0 (5) | Sterling Ford | 3 | UD | WIN | ||
6 | Aug 2, 2006 26 years, 11 months 6-0 (5) | Bobby Corpuz | 2 | SUB | WIN Rear-naked choke | ||
5 | Jun 20, 2008 28 years, 9 months 5-0 (4) | Dennis Davis | 3 | UD | WIN | ||
4 | Apr 18, 2008 28 years, 7 months 4-0 (4) | Tommy Truex | 1 | TKO | WIN Punches | ||
3 | Dec 22, 2007 28 years, 4 months 3-0 (3) | Jeremy Burnett | 1 | SUB | WIN Anaconda choke | ||
2 | Oct 27, 2007 28 years, 2 months 2-0 (2) | Dennis Parks | 1 | SUB | WIN Guillotine choke | ||
1 | Sep 22, 2007 28 years, 1 months 1-0 (1) | Alejandro Alvarez | 1 | SUB | WIN Anaconda choke |
