Koichi Tanaka (3-11-1, 3) was born in Japan on October 20, 1971. At the age of 26 years on December 8, 1997, he made his professional MMA debut against Tae Yoon Han, winning the fight via 1st-round submission.
Tanaka's last fight was a 2nd-round submission win against Manabu Kano at Deep: Osaka Impact at age 40 on May 26, 2012. He retired with a 1-fight winning streak.
Some of Koichi Tanaka's best fights have been against Manabu Kano.
Tanaka has 11 losses on his MMA record.
| # | Date | Opponent | Promotion | Weight | Round | Method | Result |
|---|---|---|---|---|---|---|---|
15 | May 26, 2012 40 years, 7 months 3-11-1 (3) | Manabu Kano | DEEP | LT | 2 | SUB | WIN Rear-naked choke |
14 | Feb 4, 2007 35 years, 3 months 2-11-1 (2) | Yuichi Miyagi | Pancrase | LT | 2 | UD | LOSS |
13 | Oct 1, 2006 34 years, 11 months 2-10-1 (2) | Kenji Takeshige | Pancrase | LT | 2 | SUB | LOSS Toe hold |
12 | Sep 23, 2001 29 years, 11 months 2-9-1 (2) | Hiroshi Komatsu | BT | 2 | UD | LOSS | |
11  | Aug 15, 2001 29 years, 9 months 2-8-1 (2) | 21 years, 2 months 0-1 (0) | FT | 2 | UD | LOSS | |
10  | Jun 14, 2001 29 years, 7 months 2-7-1 (2) | 26 years, 8 months 4-3 (1) | FT | 2 | UD | LOSS | |
9  | Feb 18, 2001 29 years, 3 months 2-6-1 (2) | 31 years, 3 months 0-3-1 (0) | BT | 1 | CKO | LOSS Armbar | |
8 | Oct 29, 1999 28 years 2-5-1 (2) | Chikara Miyake | FT | 1 | SUB | LOSS Rear-naked choke | |
7  | Aug 4, 1999 27 years, 9 months 2-4-1 (2) | 22 years, 7 months 0-1-1 (0) | FT | 2 | MD | LOSS | |
6 | May 27, 1999 27 years, 7 months 2-3-1 (2) | Isao Tanimura | WL | 2 | MD | LOSS | |
5 | Nov 20, 1998 27 years, 1 months 2-2-1 (2) | Patrick Madayag | LT | 1 | SUB | WIN Rear-naked choke | |
4  | Sep 18, 1998 26 years, 10 months 1-2-1 (1) | 27 years, 9 months 5-3-1 (5) | LT | 1 | SUB | LOSS Triangle choke | |
3  | May 13, 1998 26 years, 6 months 1-1-1 (1) | 22 years, 3 months 1-3-1 (1) | FT | 2 | UD | DRAW | |
2 | Jan 17, 1998 26 years, 2 months 1-1 (1) | Tetsuji Kato | 1 | CKO | LOSS Armbar | ||
1 | Dec 8, 1997 26 years, 1 months 1-0 (1) | Tae Yoon Han | 1 | SUB | WIN Rear-naked choke |
