Seth Baczynski (22-18, 20) was born in Lihue, Hawaii, U.S. on November 26, 1981. At the age of 23 years on August 6, 2005, he made his professional MMA debut against Ryan Potter, losing the fight via 1st-round submission.
On September 17, 2011, 29-year old Seth Baczynski made his UFC debut on his 23rd professional MMA fight at UFC Fight Night: Shields vs. Ellenberger against a 30-year old Clay Harvison, winning the fight in the 2nd round via submission.
Baczynski's last fight was a 1st-round submission loss to Jesse Taylor at age 39 on August 28, 2021. He retired on a 4-fight losing streak.
He has fought ten times in the UFC, and has a record of 5 wins and 5 losses in the promotion.
Some of Seth Baczynski's best fights have been against Clay Harvison, Matt Brown, Simeon Thoresen, Neil Magny, Tim McKenzie, Lance Benoist and Alex Garcia. For details about these fights refer to "Best fights of Seth Baczynski".
Baczynski has 18 losses on his MMA record. For details about these losses refer to "Seth Baczynski Losses".
| # | Date | Opponent | Promotion | Weight | Round | Method | Result |
|---|---|---|---|---|---|---|---|
40  | Aug 28, 2021 39 years, 9 months 22-18 (20) | 38 years, 7 months 31-16 (20) | MD | 1 | SUB | LOSS Rear-naked choke | |
39  | Nov 23, 2019 37 years, 11 months 22-17 (20) | 40 years 25-8-1 (17) | MD | 3 | UD | LOSS | |
38 | Feb 1, 2019 37 years, 2 months 22-16 (20) | Daniel Madrid | MD | 1 | SUB | LOSS Guillotine choke | |
37 | Sep 28, 2018 36 years, 10 months 22-15 (20) | Teddy Ash | MD | 5 | TKO | LOSS Punches | |
36 | Jul 29, 2018 36 years, 8 months 22-14 (20) | Matt Lagler | MD | 1 | KO | WIN Punches | |
35 | Apr 27, 2018 36 years, 5 months 21-14 (19) | Marvin Babe | MD | 1 | SUB | WIN | |
34 | Oct 15, 2016 34 years, 10 months 20-14 (18) | Jonathan Casimiro | WL | 2 | TKO | WIN Punches | |
33 | Aug 26, 2016 34 years, 9 months 19-14 (17) | 33 years, 7 months 29-14 (19) | WL | 3 | UD | LOSS | |
32  | Apr 11, 2015 33 years, 4 months 19-13 (17) | 23 years, 7 months 8-2 (6) | UFC | WL | 1 | KO | LOSS Punches |
31  | Aug 16, 2014 32 years, 8 months 19-12 (17) | 31 years, 8 months 9-2 (7) | UFC | WL | 1 | KO | LOSS Punch |
30  | Apr 19, 2014 32 years, 4 months 19-11 (17) | 30 years, 6 months 19-9 (13) | UFC | WL | 3 | UD | LOSS |
29  | Nov 6, 2013 31 years, 11 months 19-10 (17) | 26 years, 3 months 8-2 (4) | UFC | WL | 3 | UD | WIN |
28  | Jul 6, 2013 31 years, 7 months 18-10 (17) | 31 years, 1 months 6-2 (4) | UFC | WL | 1 | KO | LOSS Punches |
27  | Dec 15, 2012 31 years 18-9 (17) | 32 years, 3 months 15-5 (8) | UFC | WL | 3 | UD | LOSS |
26 | Sep 22, 2012 30 years, 9 months 18-8 (17) | Simeon Thoresen | UFC | WL | 1 | KO | WIN Punch |
25  | Jun 8, 2012 30 years, 6 months 17-8 (16) | 23 years, 9 months 6-0 (5) | UFC | WL | 3 | SD | WIN |
24  | Nov 19, 2011 29 years, 11 months 16-8 (16) | 30 years, 10 months 12-10 (11) | UFC | WL | 2 | SUB | WIN Guillotine choke |
23  | Sep 17, 2011 29 years, 9 months 15-8 (15) | 30 years, 11 months 9-2 (8) | UFC | WL | 2 | SUB | WIN Rear-naked choke |
22  | Apr 9, 2011 29 years, 4 months 14-8 (14) | 23 years, 8 months 6-0 (6) | WL | 2 | KO | WIN Punches Won Ringside welterweight title Interim | |
21  | Dec 2, 2010 29 years 13-8 (13) | 28 years, 4 months 13-8 (12) | MD | 1 | TKO | WIN Elbows and punches | |
20  | Jun 19, 2010 28 years, 6 months 12-8 (12) | 22 years, 5 months 5-0 (5) | TUF | MD | 3 | UD | LOSS |
19 | Oct 30, 2009 27 years, 11 months 12-7 (12) | Tom Nguyen | WL | 2 | SUB | WIN Guillotine choke | |
18  | Mar 7, 2009 27 years, 3 months 11-7 (11) | 26 years, 9 months 4-0 (4) | WL | 1 | KO | LOSS Punches | |
17 | Oct 4, 2008 26 years, 10 months 11-6 (11) | James Warfield | WL | 1 | KO | WIN Flying knee and punches | |
16 | Sep 20, 2008 26 years, 9 months 10-6 (10) | Oscar Montano | WL | 1 | SUB | WIN Triangle choke | |
15 | Aug 8, 2008 26 years, 8 months 9-6 (9) | Antonio Grant | WL | 1 | KO | WIN Punch | |
14 | Jul 19, 2008 26 years, 7 months 8-6 (8) | Donnie Liles | WL | 1 | SUB | LOSS Anaconda choke | |
13 | Jun 7, 2008 26 years, 6 months 8-5 (8) | Eddie Arizmendi | WL | 2 | SUB | WIN Triangle choke | |
12 | Mar 2, 2008 26 years, 3 months 7-5 (7) | Jordan Pergola | WL | 1 | SUB | WIN Triangle choke | |
11 | Feb 23, 2008 26 years, 2 months 6-5 (6) | Kito Andrews | WL | 3 | SUB | WIN Triangle choke | |
10 | Feb 1, 2008 26 years, 2 months 5-5 (5) | Chris Kennedy | MD | 1 | TKO | WIN Punches | |
9 | Jun 16, 2007 25 years, 6 months 4-5 (4) | Dan Molina | MD | 1 | SUB | LOSS Heel hook | |
8 | Apr 13, 2007 25 years, 4 months 4-4 (4) | Brent Beauparlant | MD | 3 | UD | LOSS | |
7 | Dec 2, 2006 25 years 4-3 (4) | Seth Ballantine | MD | 2 | SUB | WIN Armbar | |
6 | Jul 1, 2006 24 years, 7 months 3-3 (3) | Travos Degrout | MD | 1 | SUB | WIN Choke | |
5 | Mar 18, 2006 24 years, 3 months 2-3 (2) | Johnathan Tsosie | 1 | SUB | WIN Choke | ||
4 | Feb 2, 2006 24 years, 2 months 1-3 (1) | Shane Johnson | 1 | SUB | LOSS Kneebar | ||
3 | Nov 11, 2005 23 years, 11 months 1-2 (1) | Gabriel Flores | 3 | SUB | LOSS Choke | ||
2 | Sep 30, 2005 23 years, 10 months 1-1 (1) | Robert King | 1 | TKO | WIN Retirement | ||
1 | Aug 6, 2005 23 years, 8 months 0-1 (0) | Ryan Potter | 1 | SUB | LOSS Choke |
