Ryo Chonan

“Piranha”

MMA · Retired

22-13RECORD

8KO / TKO WINS

1SUBMISSION WINS

13DECISION WINS

Profile

Full name	Not added yet
Nickname	Piranha
Date of birth	8 Oct 1976
Nationality	Japanese
Birthplace	Tsuruoka, Japan
Lives in	Tsuruoka, Japan
Division	Welterweight
Team	Tribe Tokyo MMA
Height	175 cm (5′9″)
Reach	Not added yet
Stance	Orthodox
Years active	2001–2013
Status	Retired
Pro debut	5 May 2001
Last fight	Win vs Dan Hornbuckle, 20 Oct 2013

Details on this page were compiled from public information on 13 Oct 2026 (the record is as of that date). Is this you? Claim this profile to correct anything and add your photo and bio. Claim this profile

Titles and honours

Former DEEP Welterweight Champion
Former DEEP Middleweight Champion (1 defence)
2004 Submission of the Year (Sherdog, vs. Anderson Silva)

Background

Japanese welterweight from Tsuruoka, Yamagata, best known for his flying scissor heel hook win over Anderson Silva at PRIDE Shockwave 2004. He held DEEP titles at middleweight and welterweight, and is associated with Tribe Tokyo MMA.

Fight history

35 professional fights. Newest first.

Result	Opponent	Method	Round	Time	Event	Date	Location	Notes
Win	Dan Hornbuckle	Decision (unanimous)	3	5:00	DEEP: Tribe Tokyo Fight	20 Oct 2013	Tokyo, Japan	Won the DEEP Welterweight Championship
Win	Seichi Ikemoto	Decision (unanimous)	3	5:00	DEEP: Osaka Impact 2013	28 Apr 2013	Osaka, Japan
Loss	Hayato Sakurai	Decision (unanimous)	3	5:00	Fight For Japan: Genki Desu Ka Omisoka 2011	31 Dec 2011	Saitama, Japan
Win	Naoki Samukawa	Decision (unanimous)	3	5:00	DEEP: Cage Impact 2011 in Tokyo, 2nd Round	29 Oct 2011	Tokyo, Japan
Win	Shigetoshi Iwase	KO (punch)	1	4:45	DEEP: 54 Impact	24 Jun 2011	Tokyo, Japan
Loss	Taisuke Okuno	KO (punch)	1	0:19	World Victory Road Presents: Soul of Fight	30 Dec 2010	Tokyo, Japan
Win	Jun Hee Moon	TKO (punches)	3	2:57	DEEP: 50 Impact	24 Oct 2010	Tokyo, Japan
Loss	Jung Hwan Cha	KO (punches)	2	1:16	Astra	25 Apr 2010	Yokohama, Japan
Win	Andrews Nakahara	Decision (unanimous)	2	5:00	DREAM 13	22 Mar 2010	Yokohama, Japan
Win	Jutaro Nakao	Decision (unanimous)	3	5:00	DEEP: 43 Impact	23 Aug 2009	Tokyo, Japan
Loss	TJ Grant	Decision (split)	3	5:00	UFC 97: Redemption	18 Apr 2009	Montreal, Quebec, Canada
Loss	Brad Blackburn	Decision (unanimous)	3	5:00	UFC 92: The Ultimate 2008	27 Dec 2008	Las Vegas, Nevada, USA
Win	Roan Carneiro	Decision (split)	3	5:00	UFC 88: Breakthrough	6 Sep 2008	Atlanta, Georgia, USA
Loss	Karo Parisyan	Decision (unanimous)	3	5:00	UFC 78: Validation	17 Nov 2007	Newark, New Jersey, USA
Win	Seo Do Wong	TKO (strikes)	1	2:58	DEEP: DEEP in Yamagata	24 Jun 2007	Yamagata, Japan
Win	Ryuta Sakurai	Decision (majority)	3	5:00	DEEP: 28 Impact	16 Feb 2007	Tokyo, Japan	Defended the DEEP Middleweight Championship
Loss	Paulo Filho	Submission (armbar)	1	2:30	PRIDE Bushido 12	26 Aug 2006	Nagoya, Japan	PRIDE Welterweight Grand Prix quarter-final
Win	Joey Villaseñor	Decision (split)	2	5:00	PRIDE Bushido 11	4 Jun 2006	Saitama, Japan	PRIDE Welterweight Grand Prix opening round
Win	Ryuta Sakurai	TKO (doctor stoppage)	1	1:57	DEEP: 23 Impact	5 Feb 2006	Tokyo, Japan	Won the DEEP Middleweight Championship
Loss	Dan Henderson	KO (punch)	1	0:22	PRIDE Bushido 9	25 Sep 2005	Tokyo, Japan
Loss	Phil Baroni	KO (punch)	1	1:40	PRIDE Bushido 8	17 Jul 2005	Nagoya, Japan
Win	Nino Schembri	Decision (unanimous)	2	5:00	PRIDE Bushido 7	22 May 2005	Tokyo, Japan
Win	Roan Carneiro	TKO (doctor stoppage)	3	2:15	DEEP: 18th Impact	12 Feb 2005	Tokyo, Japan
Win	Anderson Silva	Submission (flying scissor heel hook)	3	3:08	PRIDE Shockwave 2004	31 Dec 2004	Saitama, Japan
Win	Carlos Newton	Decision (unanimous)	2	5:00	PRIDE Bushido 5	14 Oct 2004	Osaka, Japan
Loss	Ricardo Almeida	Decision (unanimous)	2	5:00	PRIDE Bushido 3	23 May 2004	Yokohama, Japan
Win	Daijiro Matsui	Decision (majority)	3	5:00	DEEP: 13th Impact	22 Jan 2004	Tokyo, Japan
Win	Hayato Sakurai	TKO (doctor stoppage)	3	2:10	DEEP: 12th Impact	15 Sep 2003	Tokyo, Japan
Win	Yuji Hisamatsu	Decision (majority)	3	5:00	DEEP: 11th Impact	13 Jul 2003	Osaka, Japan
Loss	Masanori Suda	Decision (split)	3	5:00	DEEP: 7th Impact	8 Dec 2002	Tokyo, Japan
Win	Katsumi Usuta	TKO (strikes)	1	0:05	DEEP: 6th Impact	7 Sep 2002	Tokyo, Japan
Loss	Eiji Ishikawa	Decision (majority)	2	5:00	DEEP: 5th Impact	9 Jun 2002	Tokyo, Japan
Win	Kenji Akiyama	TKO (submission to punches)	1	4:22	DEEP: 4th Impact	30 Mar 2002	Nagoya, Japan
Win	Takaku Fuke	Decision (unanimous)	3	5:00	DEEP: 3rd Impact	23 Dec 2001	Tokyo, Japan
Loss	Hikaru Sato	Decision (unanimous)	3	5:00	Pancrase: 2001 Neo-Blood Tournament Eliminations	5 May 2001	Japan	Pro debut