Tsuyoshi Kosaka (30-21-2, 19) was born in Shiga, Japan on March 6, 1970. At the age of 24 years on January 25, 1995, he made his professional MMA debut against Wataru Sakata, winning the fight via 2nd-round submission.
On March 13, 1998, 28-year old Tsuyoshi Kosaka made his UFC debut on his 18th professional MMA fight at UFC 16 against a 30-year old Kimo Leopoldo, winning the fight via 1-round unanimous decision.
Kosaka's last fight was a 1st-round KO win against Mikio Ueda at Rizin 35 at age 52 on April 17, 2022. He retired with a 1-fight winning streak.
He has fought six times in the UFC, and has a record of 3 wins and 3 losses in the promotion.
Some of Tsuyoshi Kosaka's best fights have been against Ron Waterman, Tim Lajcik, Kimo Leopoldo, Pete Williams, Fedor Emelianenko, Mario Sperry and Maurice Smith.
Kosaka has 21 losses on his MMA record.
| # | Date | Opponent | Promotion | Weight | Round | Method | Result |
|---|---|---|---|---|---|---|---|
53 | Apr 17, 2022 52 years, 1 months 30-21-2 (19) | Mikio Ueda | Rizin | HW | 1 | KO | WIN Punches |
52 | Jan 19, 2020 49 years, 10 months 29-21-2 (18) | Saša Milinković | HW | 1 | TKO | LOSS Doctor stoppage | |
51  | Dec 31, 2017 47 years, 9 months 29-20-2 (18) | 43 years, 3 months 35-11-2 (32) | HW | 1 | TKO | LOSS Corner stoppage | |
50  | Dec 29, 2016 46 years, 9 months 29-19-2 (18) | 32 years, 1 months 2-0 (0) | Rizin | HW | 2 | UD | LOSS |
49  | Dec 29, 2015 45 years, 9 months 29-18-2 (18) | 37 years 20-15 (18) | Rizin | HW | 2 | TKO | WIN Punches |
48  | May 5, 2006 36 years, 1 months 28-18-2 (17) | 32 years, 1 months 4-1 (2) | HW | 2 | TKO | LOSS Punch | |
47  | Feb 26, 2006 35 years, 11 months 28-17-2 (17) | 39 years, 4 months 12-3 (9) | HW | 1 | KO | WIN Punches | |
46  | Oct 2, 2005 35 years, 6 months 27-17-2 (16) | 25 years, 6 months 9-3 (9) | Pancrase | HW | 3 | UD | LOSS |
45 | Aug 20, 2005 35 years, 5 months 27-16-2 (16) | David Shvelidze | RINGS | HW | 1 | SUB | WIN Armbar |
44  | Apr 3, 2005 35 years 26-16-2 (15) | 28 years, 6 months 21-1 (15) | HW | 1 | TKO | LOSS Doctor stoppage | |
43  | Nov 7, 2004 34 years, 8 months 26-15-2 (15) | 38 years, 11 months 12-2-2 (11) | Pancrase | HW | 3 | UD | WIN Won Pancrase Super heavyweight title |
42 | Oct 13, 2003 33 years, 7 months 25-15-2 (15) | Ricardo Morais | HW | 3 | UD | WIN | |
41 | May 2, 2003 33 years, 1 months 24-15-2 (15) | Dolgorsürengiin Sumyaabazar | HW | 1 | TKO | WIN Doctor stoppage | |
40  | Sep 7, 2002 32 years, 6 months 23-15-2 (14) | 26 years, 3 months 3-1 (2) | DEEP | HW | 3 | UD | LOSS |
39  | May 10, 2002 32 years, 2 months 23-14-2 (14) | 24 years, 8 months 12-1 (9) | UFC | HW | 2 | TKO | LOSS Punches |
38 | Dec 21, 2001 31 years, 9 months 23-13-2 (14) | Bazigit Atajev | RINGS | HW | 3 | MD | LOSS |
37 | Aug 11, 2001 31 years, 5 months 23-12-2 (14) | Koba Tkeshelashvili | RINGS | HW | 1 | KO | WIN Knee |
36  | Jun 15, 2001 31 years, 3 months 22-12-2 (13) | 25 years, 9 months 18-2 (13) | RINGS | HW | 3 | MD | LOSS |
35  | Feb 24, 2001 30 years, 11 months 22-11-2 (13) | 37 years, 8 months 7-2 (4) | RINGS | HW | 2 | SD | LOSS |
34 | Dec 22, 2000 30 years, 9 months 22-10-2 (13) | 24 years, 2 months 4-0 (3) | RINGS | HW | 1 | TKO | WIN Doctor stoppage |
33  | Dec 22, 2000 30 years, 9 months 21-10-2 (12) | 34 years, 1 months 24-9 (22) | RINGS | HW | 2 | KO | WIN Punches |
32  | Aug 23, 2000 30 years, 5 months 20-10-2 (11) | 24 years, 2 months 6-1 (2) | RINGS | HW | 2 | UD | DRAW |
31 | Jul 15, 2000 30 years, 4 months 20-10-1 (11) | Greg Wikan | RINGS | HW | 1 | SUB | WIN Toe hold |
30  | Jul 15, 2000 30 years, 4 months 19-10-1 (10) | 23 years, 1 months 74-25-6 (71) | RINGS | HW | 3 | UD | WIN |
29  | Dec 22, 1999 29 years, 9 months 18-10-1 (10) | 23 years, 5 months 18-3 (18) | RINGS | HW | 3 | TKO | LOSS Doctor stoppage |
28  | Dec 22, 1999 29 years, 9 months 18-9-1 (10) | 30 years, 6 months 8-5 (7) | RINGS | HW | 1 | SD | WIN |
27  | Nov 19, 1999 29 years, 8 months 17-9-1 (10) | 25 years, 6 months 8-0 (7) | UFC | HW | 3 | TKO | LOSS Punches |
26 | Aug 19, 1999 29 years, 5 months 17-8-1 (10) | 23 years, 1 months 15-2 (15) | RINGS | HW | 1 | UD | WIN |
25  | Jul 16, 1999 29 years, 4 months 16-8-1 (10) | 34 years 4-0 (4) | UFC | HW | 2 | TKO | WIN Corner stoppage |
24  | May 22, 1999 29 years, 2 months 15-8-1 (9) | 28 years, 10 months 9-8 (8) | RINGS | HW | 3 | TKO | LOSS Palm strikes |
23 | Apr 23, 1999 29 years, 1 months 15-7-1 (9) | 22 years, 9 months 13-2 (13) | RINGS | HW | 1 | TKO | LOSS Doctor stoppage |
22  | Jan 8, 1999 28 years, 10 months 15-6-1 (9) | 33 years, 10 months 25-4-1 (22) | UFC | HW | 1 | TKO | LOSS Punches |
21  | Oct 16, 1998 28 years, 7 months 15-5-1 (9) | 23 years, 3 months 8-1 (6) | UFC | HW | 1 | UD | WIN |
20  | Jun 27, 1998 28 years, 3 months 14-5-1 (9) | 28 years, 6 months 12-3 (11) | RINGS | 1 | UD | DRAW | |
19  | May 29, 1998 28 years, 2 months 14-5 (9) | 37 years, 1 months 12-4 (6) | RINGS | 1 | SUB | WIN Injury | |
18  | Mar 13, 1998 28 years 13-5 (8) | 30 years, 2 months 8-2-1 (8) | UFC | 1 | UD | WIN | |
17 | Feb 8, 1998 27 years, 11 months 12-5 (8) | Rob van Esdonk | RINGS | 2 | SUB | WIN Heel hook | |
16 | Jan 21, 1998 27 years, 10 months 11-5 (7) | Mikhail Ilyukhin | RINGS | 2 | SUB | LOSS | |
15 | Oct 25, 1997 27 years, 7 months 11-4 (7) | Jerry Askoff | RINGS | 2 | N/A | WIN | |
14  | Oct 25, 1997 27 years, 7 months 10-4 (7) | 26 years, 9 months | RINGS | 1 | UD | WIN | |
13  | Sep 26, 1997 27 years, 6 months 9-4 (7) | 24 years, 9 months 11-7-1 (8) | RINGS | 1 | UD | LOSS | |
12 | Apr 22, 1997 27 years, 1 months 9-3 (7) | 27 years, 4 months 6-2 (6) | RINGS | 1 | SUB | LOSS Toe hold | |
11 | Jan 22, 1997 26 years, 10 months 9-2 (7) | 30 years, 2 months 12-5 (12) | RINGS | 2 | SUB | WIN | |
10 | Jan 1, 1997 26 years, 9 months 8-2 (6) | 35 years, 8 months 5-1 (4) | RINGS | 1 | SUB | LOSS Armbar | |
9  | Oct 25, 1996 26 years, 7 months 8-1 (6) | 31 years, 5 months 3-2 (3) | RINGS | 2 | N/A | WIN | |
8 | Aug 24, 1996 26 years, 5 months 7-1 (6) | 35 years, 4 months 3-1 (3) | RINGS | 1 | SUB | LOSS Armbar | |
7 | Jun 6, 1996 26 years, 3 months 7-0 (6) | Scott Sollivan | 1 | SUB | WIN Arm-triangle choke | ||
6  | Feb 18, 1996 25 years, 11 months 6-0 (5) | 30 years, 3 months 1-1 (0) | RINGS | 2 | SUB | WIN Rear-naked choke | |
5  | Jan 24, 1996 25 years, 10 months 5-0 (4) | 34 years, 1 months 3-4 (3) | RINGS | 1 | SUB | WIN Heel hook | |
4  | Oct 13, 1995 25 years, 7 months 4-0 (3) | 30 years, 4 months 2-0 (2) | 1 | UD | WIN | ||
3 | Oct 13, 1995 25 years, 7 months 3-0 (3) | Susumu Yamasaki | 1 | SUB | WIN Heel hook | ||
2 | Oct 13, 1995 25 years, 7 months 2-0 (2) | Hiroyuki Yoshioka | 3 | TKO | WIN Punches | ||
1  | Jan 25, 1995 24 years, 10 months 1-0 (1) | 21 years, 10 months | RINGS | 2 | SUB | WIN |
