Ryo Chonan (22-13, 9) was born in Tsuruoka, Yamagata, Japan on October 8, 1976. At the age of 24 years on May 5, 2001, he made his professional MMA debut against Hikaru Sato, losing the fight via 3-round unanimous decision.
On November 17, 2007, 31-year old Ryo Chonan made his UFC debut on his 22nd professional MMA fight at UFC 78 against a 25-year old Karo Parisyan but lost the fight via unanimous decision.
Chonan's last fight was a welterweight title fight against Dan Hornbuckle for Hornbuckle's DEEP Championship title on October 20, 2013. He won the fight via 3-round unanimous decision and was crowned the new welterweight DEEP champion. He retired with a 2-fight winning streak.
He has fought four times in the UFC, and has a record of 1 win and 3 losses in the promotion.
Some of Ryo Chonan's best fights have been against Ryuta Sakurai, Dan Hornbuckle, Roan Carneiro, Hayato Sakurai, Carlos Newton, Nino Schembri and Joey Villaseñor.
Chonan has 13 losses on his MMA record.
| # | Date | Opponent | Promotion | Weight | Round | Method | Result |
|---|---|---|---|---|---|---|---|
35  | Oct 20, 2013 37 years 22-13 (9) | 32 years, 9 months 24-6 (20) | DEEP | WL | 3 | UD | WIN Won DEEP welterweight title |
34  | Apr 28, 2013 36 years, 6 months 21-13 (9) | 37 years, 8 months 21-18-5 (12) | DEEP | MD | 3 | UD | WIN |
33  | Dec 31, 2011 35 years, 2 months 20-13 (9) | 36 years, 4 months 35-12-2 (21) | MD | 3 | UD | LOSS | |
32 | Oct 29, 2011 35 years 20-12 (9) | Naoki Samukawa | DEEP | MD | 3 | UD | WIN |
31 | Jun 24, 2011 34 years, 8 months 19-12 (9) | Shigetoshi Iwase | DEEP | MD | 1 | KO | WIN Punch |
30  | Dec 30, 2010 34 years, 2 months 18-12 (8) | 33 years, 9 months 10-5-2 (8) | MD | 1 | KO | LOSS Punch | |
29 | Oct 24, 2010 34 years 18-11 (8) | Jun Hee Moon | DEEP | MD | 3 | TKO | WIN Punches |
28 | Apr 25, 2010 33 years, 6 months 17-11 (7) | Jung Hwan Cha | MD | 2 | KO | LOSS Punches | |
27 | Mar 22, 2010 33 years, 5 months 17-10 (7) | Andrews Nakahara | DREAM | MD | 2 | UD | WIN |
26  | Aug 23, 2009 32 years, 10 months 16-10 (7) | 38 years, 8 months 22-14-4 (17) | DEEP | MD | 3 | UD | WIN |
25 | Apr 18, 2009 32 years, 6 months 15-10 (7) | T. J. Grant | UFC | MD | 3 | SD | LOSS |
24  | Dec 27, 2008 32 years, 2 months 15-9 (7) | 31 years, 7 months 16-9-1 (13) | UFC | MD | 3 | UD | LOSS |
23  | Sep 6, 2008 31 years, 10 months 15-8 (7) | 30 years, 3 months 12-7 (7) | UFC | MD | 3 | SD | WIN |
22  | Nov 17, 2007 31 years, 1 months 14-8 (7) | 25 years, 2 months 17-4 (9) | UFC | MD | 3 | UD | LOSS |
21 | Jun 24, 2007 30 years, 8 months 14-7 (7) | Seo Do Wong | DEEP | WL | 1 | TKO | WIN Strikes |
20  | Feb 16, 2007 30 years, 4 months 13-7 (6) | 35 years, 4 months 14-11-4 (10) | DEEP | MD | 3 | MD | WIN Defended DEEP middleweight title |
19  | Aug 26, 2006 29 years, 10 months 12-7 (6) | 28 years, 3 months 12-0 (5) | WL | 1 | SUB | LOSS Armbar | |
18  | Jun 4, 2006 29 years, 7 months 12-6 (6) | 30 years, 7 months 21-3 (19) | WL | 2 | SD | WIN | |
17 | Feb 5, 2006 29 years, 3 months 11-6 (6) | 34 years, 4 months 12-10-4 (9) | DEEP | MD | 1 | TKO | WIN Doctor stoppage Won DEEP middleweight title |
16  | Sep 25, 2005 28 years, 11 months 10-6 (5) | 35 years, 1 months 16-4 (7) | 1 | KO | LOSS Punch | ||
15  | Jul 17, 2005 28 years, 9 months 10-5 (5) | 29 years, 3 months 7-5 (6) | 1 | KO | LOSS Punch | ||
14  | May 22, 2005 28 years, 7 months 10-4 (5) | 30 years, 11 months 3-2 (2) | 2 | UD | WIN | ||
13 | Feb 12, 2005 28 years, 4 months 9-4 (5) | 26 years, 8 months 5-2 (4) | DEEP | 3 | TKO | WIN Doctor stoppage | |
12  | Dec 31, 2004 28 years, 2 months 8-4 (4) | 29 years, 8 months 14-2 (9) | 3 | SUB | WIN Flying scissor heel hook | ||
11  | Oct 14, 2004 28 years 7-4 (3) | 28 years, 1 months 13-9 (10) | 2 | UD | WIN | ||
10  | May 23, 2004 27 years, 7 months 6-4 (3) | 27 years, 5 months 7-2 (3) | 2 | UD | LOSS | ||
9  | Jan 22, 2004 27 years, 3 months 6-3 (3) | 31 years, 1 months 6-10-2 (0) | DEEP | 3 | MD | WIN | |
8 | Sep 15, 2003 26 years, 11 months 5-3 (3) | 28 years 21-3-2 (13) | DEEP | 3 | TKO | WIN Doctor stoppage | |
7 | Jul 13, 2003 26 years, 9 months 4-3 (2) | Yuji Hisamatsu | DEEP | 3 | MD | WIN | |
6  | Dec 8, 2002 26 years, 2 months 3-3 (2) | 29 years, 4 months 18-9-1 (12) | DEEP | 3 | SD | LOSS | |
5 | Sep 7, 2002 25 years, 10 months 3-2 (2) | Katsumi Usuta | DEEP | 1 | TKO | WIN Strikes | |
4 | Jun 9, 2002 25 years, 8 months 2-2 (1) | Eiji Ishikawa | DEEP | 2 | MD | LOSS | |
3 | Mar 30, 2002 25 years, 5 months 2-1 (1) | Kenji Akiyama | DEEP | 1 | TKO | WIN Submission to punches | |
2 | Dec 23, 2001 25 years, 2 months 1-1 (0) | Takaku Fuke | DEEP | 3 | UD | WIN | |
1  | May 5, 2001 24 years, 6 months 0-1 (0) | 20 years, 9 months 2-5 (1) | Pancrase | 3 | UD | LOSS |
