Masahiro Oishi (30-21-9, 22) was born in Shimizu, Japan on November 29, 1968. At the age of 24 years on November 25, 1993, he made his professional MMA debut against Yoshiaki Murai, winning the fight via 3-round unanimous decision.
Oishi's last fight was a 2-round majority decision win against Toru Fujii at age 52 on April 4, 2021. He retired with a 1-fight winning streak.
Some of Masahiro Oishi's best fights have been against Mamoru Yamaguchi, Katsuhisa Akasaki, Yoshinobu Ota, Yoshihiro Fujita, Jin Akimoto, Artemij Sitenkov and Takumi Murata.
Oishi has 21 losses on his MMA record.
| # | Date | Opponent | Promotion | Weight | Round | Method | Result |
|---|---|---|---|---|---|---|---|
60 | Apr 4, 2021 52 years, 4 months 30-21-9 (22) | Toru Fujii | BT | 2 | MD | WIN | |
59  | Feb 23, 2020 51 years, 2 months 29-21-9 (22) | 35 years 30-23-9 (21) | BT | 2 | SUB | LOSS Armbar | |
58 | Nov 24, 2019 50 years, 11 months 29-20-9 (22) | Tatsuya Karasawa | BT | 2 | UD | LOSS | |
57 | Mar 23, 2019 50 years, 3 months 29-19-9 (22) | Sung Hoon Jung | BT | 2 | SUB | WIN Triangle choke | |
56 | Nov 24, 2018 49 years, 11 months 28-19-9 (21) | Yong Jae Oh | BT | 2 | UD | WIN | |
55 | Jul 7, 2018 49 years, 7 months 27-19-9 (21) | Jong Moon Bae | BT | 1 | SUB | WIN Guillotine choke | |
54 | Oct 21, 2017 48 years, 10 months 26-19-9 (20) | Cleber Luciano | BT | 2 | SUB | LOSS Rear naked choke | |
53 | Oct 10, 2016 47 years, 10 months 26-18-9 (20) | Junichi Hirata | BT | 1 | SUB | WIN Armbar | |
52 | Feb 27, 2016 47 years, 2 months 25-18-9 (19) | Hirotaka Miyakawa | DEEP | BT | 1 | SUB | WIN Armbar |
51 | Sep 12, 2015 46 years, 9 months 24-18-9 (18) | Takeya Takemoto | BT | 2 | UD | LOSS | |
50 | Jun 8, 2014 45 years, 6 months 24-17-9 (18) | Jun Jun | BT | 2 | SUB | WIN Armbar | |
49 | Jul 15, 2013 44 years, 7 months 23-17-9 (17) | Takaaki Ito | BT | 1 | SUB | WIN Rear-naked choke | |
48  | Aug 18, 2012 43 years, 8 months 22-17-9 (16) | 36 years, 6 months 25-11-2 (17) | DEEP | BT | 1 | SUB | LOSS Toe hold |
47 | Jun 16, 2012 43 years, 6 months 22-16-9 (16) | Tomoaki Ueyama | BT | 1 | SUB | WIN Armbar | |
46 | Jan 28, 2012 43 years, 1 months 21-16-9 (15) | Yuta Numakura | Pancrase | BT | 2 | UD | LOSS |
45 | Sep 4, 2011 42 years, 9 months 21-15-9 (15) | Tashiro Nishiuchi | Pancrase | BT | 3 | UD | DRAW Majority |
44 | Jul 16, 2011 42 years, 7 months 21-15-8 (15) | Abdul Guyirbegov | BT | 1 | KO | LOSS Head kick | |
43 | Feb 6, 2011 42 years, 2 months 21-14-8 (15) | Masaya Takita | Pancrase | BT | 2 | UD | DRAW |
42 | Nov 3, 2010 41 years, 11 months 21-14-7 (15) | Hirokazu Nishimura | Pancrase | BT | 2 | TKO | WIN Corner stoppage |
41 | Aug 8, 2010 41 years, 8 months 20-14-7 (14) | Takumi Murata | Pancrase | BT | 1 | SUB | WIN Triangle choke |
40 | May 29, 2010 41 years, 6 months 19-14-7 (13) | Michael Mortimer | BT | 3 | TKO | LOSS Doctor stoppage | |
39 | Oct 25, 2009 40 years, 10 months 19-13-7 (13) | Manabu Inoue | Pancrase | BT | 3 | UD | LOSS For Pancrase bantamweight title |
38  | May 23, 2009 40 years, 5 months 19-12-7 (13) | 26 years, 5 months 6-1-2 (4) | BT | 2 | TKO | LOSS Punches | |
37  | Dec 6, 2008 40 years 19-11-7 (13) | 24 years, 11 months 10-2-2 (4) | BT | 2 | TKO | LOSS Punches | |
36 | Sep 27, 2008 39 years, 9 months 19-10-7 (13) | Tetsu Suzuki | FT | 3 | UD | WIN | |
35 | Apr 5, 2008 39 years, 4 months 18-10-7 (13) | Paul McVeigh | FT | 2 | TKO | WIN Punches | |
34 | Nov 10, 2007 38 years, 11 months 17-10-7 (12) | Artemij Sitenkov | K-1 | FT | 2 | SUB | WIN Triangle choke |
33 | Sep 8, 2007 38 years, 9 months 16-10-7 (11) | Taiyo Nakahara | FT | 1 | TKO | WIN Eye injury | |
32 | Jun 10, 2007 38 years, 6 months 15-10-7 (10) | Wataru Inatsu | FT | 1 | SUB | WIN Armbar | |
31 | Feb 12, 2007 38 years, 2 months 14-10-7 (9) | Kentaro Imaizumi | FT | 2 | UD | DRAW | |
30  | Sep 10, 2006 37 years, 9 months 14-10-6 (9) | 20 years, 11 months 1-1-1 (1) | FT | 1 | KO | LOSS Head kick | |
29 | Apr 23, 2006 37 years, 4 months 14-9-6 (9) | Sergej Juskevic | FT | 1 | SUB | WIN Armbar | |
28 | Nov 23, 2005 36 years, 11 months 13-9-6 (8) | Masayuki Okude | FT | 2 | SUB | WIN Reverse triangle choke | |
27  | Jul 30, 2005 36 years, 8 months 12-9-6 (7) | 34 years, 3 months 11-8-2 (5) | FT | 1 | CKO | WIN Armbar | |
26 | May 3, 2005 36 years, 5 months 11-9-6 (7) | Ryusuke Uemura | FT | 3 | UD | DRAW | |
25 | Apr 7, 2005 36 years, 4 months 11-9-5 (7) | Eugenij Konkov | FT | 2 | UD | DRAW | |
24  | Jan 23, 2005 36 years, 1 months 11-9-4 (7) | 22 years, 5 months 11-3 (11) | FT | 1 | KO | LOSS Punches | |
23  | Jan 23, 2005 36 years, 1 months 11-8-4 (7) | 27 years, 5 months 13-10-1 (11) | FT | 3 | SD | WIN | |
22 | Nov 3, 2004 35 years, 11 months 10-8-4 (7) | Stephen Gillinder | FT | 1 | SUB | WIN Armbar | |
21  | Sep 12, 2004 35 years, 9 months 9-8-4 (6) | 27 years 18-7-1 (14) | FT | 1 | CKO | LOSS Guillotine choke | |
20 | May 5, 2004 35 years, 5 months 9-7-4 (6) | Takahiro Uchiyama | FT | 1 | SUB | WIN Armbar | |
19 | Nov 23, 2003 34 years, 11 months 8-7-4 (5) | 26 years, 3 months 8-7-1 (6) | FT | 1 | SUB | LOSS Armbar | |
18  | Aug 10, 2003 34 years, 8 months 8-6-4 (5) | 21 years, 4 months 11-1 (2) | FT | 3 | MD | LOSS Lost Shooto World | |
17 | Sep 16, 2002 33 years, 9 months 8-5-4 (5) | Hisao Ikeda | FT | 3 | UD | DRAW Defended Shooto World | |
16  | Nov 25, 2001 32 years, 11 months 8-5-3 (5) | 24 years, 5 months 7-0-1 (4) | FT | 1 | SUB | WIN Triangle armbar Won Shooto World | |
15  | Mar 2, 2001 32 years, 3 months 7-5-3 (4) | 28 years, 3 months 3-2 (0) | 2 | SUB | WIN Rear naked choke | ||
14 | Jan 19, 2001 32 years, 1 months 6-5-3 (3) | Masaki Nishizawa | 1 | TKO | WIN Punches | ||
13  | May 22, 2000 31 years, 5 months 5-5-3 (2) | 25 years 1-1 (1) | 2 | SUB | LOSS Rear naked choke | ||
12  | Sep 5, 1999 30 years, 9 months 5-4-3 (2) | 29 years, 6 months 2-0 (1) | 2 | UD | DRAW | ||
11  | Mar 28, 1999 30 years, 3 months 5-4-2 (2) | 21 years, 2 months 1-0 (0) | 1 | SUB | LOSS Armbar | ||
10 | Feb 2, 1999 30 years, 2 months 5-3-2 (2) | Cheyanne Padeken | 1 | KO | LOSS Punches | ||
9 | Jul 18, 1998 29 years, 7 months 5-2-2 (2) | Kimihito Nonaka | 2 | SUB | WIN Armbar | ||
8  | Mar 1, 1998 29 years, 3 months 4-2-2 (1) | 28 years, 4 months 0-1 (0) | 1 | CKO | WIN Kimura | ||
7 | Aug 27, 1997 28 years, 8 months 3-2-2 (1) | Hisao Ikeda | 2 | UD | LOSS | ||
6 | Jun 25, 1997 28 years, 6 months 3-1-2 (1) | Yoshiyuki Takayama | 2 | UD | WIN | ||
5  | Oct 4, 1996 27 years, 10 months 2-1-2 (1) | 22 years, 7 months 0-1 (0) | 1 | SUB | WIN Armbar | ||
4 | Mar 5, 1996 27 years, 3 months 1-1-2 (0) | Hisao Ikeda | 3 | UD | DRAW | ||
3 | Nov 7, 1995 26 years, 11 months 1-1-1 (0) | Kimihito Nonaka | 3 | UD | DRAW | ||
2 | Sep 26, 1994 25 years, 9 months 1-1 (0) | Masato Suzuki | 2 | SUB | LOSS Armbar | ||
1 | Nov 25, 1993 24 years, 11 months 1-0 (0) | Yoshiaki Murai | 3 | UD | WIN |
