Koichi (kickboxer)

Koichi Watanabe (コウイチ) (26 October 1980 - 7 April 2018), better known as Koichi Pettas or simply KOICHI, was a Japanese heavyweight kickboxer competing in K-1, It's Showtime and GLORY.

Biography and career
Koichi gained recognition fighting in organizations like RISE and MARS, then went on to win the M-1 Heavyweight Muaythai title in 2009 and the WPMF Japan Heavyweight Muaythai title in 2010. Having spent most of his career at heavyweight, Koichi dropped to light-heavyweight following back-to-back losses to Jerome Le Banner in GLORY events. He retired from active competition in November 2017 to become a trainer. Koichi was killed in a traffic accident on April 7, 2018. He collided with a car while driving a scooter in Tokyo. He was declared dead shortly upon arrival at the hospital.

Titles

 * 2010 WPMF Japan Heavyweight Muaythai champion
 * 2009 M-1 Heavyweight Muaythai champion

Kickboxing record
! style=background:white colspan=9 |Fight was for the vacant IT'S SHOWTIME Japan 95kg title. ! style=background:white colspan=9 |Wins WPMF Japan Heavyweight Muaythai title. ! style=background:white colspan=9 |Fight was for the J-Network Heavyweight title. ! style=background:white colspan=9 |Wins M-1 Heavyweight Muaythai title. ! style=background:white colspan=9 |Fight was for the J-Network Heavyweight Tournament title.
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 * 2017-11-23 || Loss ||align=left|🇲🇦 Ibrahim El Bouni || K-1 World GP 2017 Heavyweight Championship Tournament, Quarter Finals || Saitama, Japan || KO (Left Hook)  || 1|| 0:20 ||31-12-1
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 * 2017-04-22 || Win||align=left|🇯🇵 K-Jee || K-1 World GP 2017 Super Bantamweight Championship || Tokyo, Japan || KO || 3 || ||31-11-1
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 * 2016-09-19 || Loss ||align=left|🇯🇵 Makoto Uehara || K-1 World GP 2016 -60kg World Tournament || Tokyo, Japan || Decision (Unanimous) || 3 || 3:00 ||30-11-1
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 * 2015-11-4 || Win||align=left|🇯🇵 Nobu Hayashi || Enishi || Tokyo, Japan || KO || 1 || 1:24 ||30-10-1
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 * 2015-8-1 || Win||align=left|🇯🇵 Hiromi Amada || Blade 2 || Tokyo, Japan || Decision (Unanimous) || 3 || 3:00 ||29-10-1
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 * 2014-12-29 || Win||align=left|🇯🇵 Raoumaru || Blade 1 || Tokyo, Japan || Decision (Unanimous) || 3 || 3:00 ||28-10-1
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 * 2014-9-28 || Win||align=left|🇯🇵 GORIsenoo || REBELS 30 || Tokyo, Japan || KO || 1 || 1:47 ||27-10-1
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 * 2013-06-22 || Loss ||align=left|🇺🇸 Randy Blake || Glory 9: New York - 95 kg Slam Tournament, Reserve Bout || New York City, New York, USA || Decision (unanimous) || 3 || 3:00 || 26-10-1
 * - bgcolor="#FFBBBB"
 * 2013-05-03 || Loss ||align=left|🇫🇷 Jérôme Le Banner || Glory 8: Tokyo || Tokyo, Japan || Decision (unanimous) || 3 || 3:00 || 26-9-1
 * - bgcolor="#FFBBBB"
 * 2012-12-31 ||Loss ||align=left|🇫🇷 Jérôme Le Banner || Glory 4: Tokyo || Saitama, Japan ||KO (Right Hook) || 3|| 2:48 || 26-8-1
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 * 2012-10-06 ||Win ||align=left|🇺🇸 Mark Miller || Glory 2: Brussels || Brussels, Belgium ||KO (Right Cross) ||2 || || 26-7-1
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 * 2012-7-29 || Win ||align=left|🇯🇵 Ryuta Noji || IT'S SHOWTIME JAPAN countdown-2 || Tokyo, Japan || KO (3 Punches/Knockdowns) || 1 || 2:54 || 25-7-1
 * - bgcolor="#CCFFCC"
 * 2012-5-20 || Win ||align=left|🇯🇵 Jonhan Kim || SHUKEN VI - IT'S SHOWTIME Japan || Tokyo, Japan || Decision (3-0) || 3 || 3:00 || 24-7-1
 * - bgcolor="#FFBBBB"
 * 2012-01-22 || Loss ||align=left|🇯🇵 Toshio Matsumoto || REBELS.10 - IT'S SHOWTIME Japan || Tokyo, Japan || Decision (3-0) || 3 || 3:00 || 23-7-1
 * 2012-10-06 ||Win ||align=left|🇺🇸 Mark Miller || Glory 2: Brussels || Brussels, Belgium ||KO (Right Cross) ||2 || || 26-7-1
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 * 2012-7-29 || Win ||align=left|🇯🇵 Ryuta Noji || IT'S SHOWTIME JAPAN countdown-2 || Tokyo, Japan || KO (3 Punches/Knockdowns) || 1 || 2:54 || 25-7-1
 * - bgcolor="#CCFFCC"
 * 2012-5-20 || Win ||align=left|🇯🇵 Jonhan Kim || SHUKEN VI - IT'S SHOWTIME Japan || Tokyo, Japan || Decision (3-0) || 3 || 3:00 || 24-7-1
 * - bgcolor="#FFBBBB"
 * 2012-01-22 || Loss ||align=left|🇯🇵 Toshio Matsumoto || REBELS.10 - IT'S SHOWTIME Japan || Tokyo, Japan || Decision (3-0) || 3 || 3:00 || 23-7-1
 * - bgcolor="#FFBBBB"
 * 2012-01-22 || Loss ||align=left|🇯🇵 Toshio Matsumoto || REBELS.10 - IT'S SHOWTIME Japan || Tokyo, Japan || Decision (3-0) || 3 || 3:00 || 23-7-1
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 * 2011-09-04 || Win ||align=left|🇯🇵 Yoichi Babaguchi ||TITANS NEOS X || Tokyo, Japan || KO (Left hook) || 1 || 0:51 || 23-6-1
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 * 2011-07-18 || Win ||align=left|🇰🇷 Nam II || IT'S SHOWTIME JAPAN countdown-1 || Tokyo, Japan || KO (Left hook) || 2 || 0:46 || 22-6-1
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 * 2011-06-12 || Win ||align=left|🇳🇿 Andrew Peck || M-1 Fairtex Challenge || Tokyo, Japan || KO (Knees and punches)|| 3 || 1:01 || 21-6-1
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 * 2010-12-01 || Win ||align=left|🇯🇵 Hiromi Amada || Fujiwara Festival 2010 || Tokyo, Japan || Decision (3-0) || 5 || 3:00 || 20-6-1
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 * 2010-09-12 || Win ||align=left|🇯🇵 Fuck Kishida || M-1 Fairtex Challenge || Tokyo, Japan || KO (Knee strike) || 2 || 1:20 || 19-6-1
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 * 2010-06-27 || Win ||align=left|🇯🇵 Eiji Ikeno || M-1 Fairtex Challenge || Tokyo, Japan || KO (Knee strike) || 2 || 2:34 || 18-6-1
 * - bgcolor="#CCFFCC"
 * 2010-06-06 || Win ||align=left|🇯🇵 Ryo Takigawa || M-1 Fairtex Challenge || Tokyo, Japan || KO (High kick)|| 2 || 0:19 || 17-6-1
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 * 2009-09-08 || Draw ||align=left|🇯🇵 Yuuki Niimura || || Tokyo, Japan || Decision Draw (1-0) || 3 || 3:00 || 16-6-1
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 * 2009-08-02 || Win ||align=left|🇯🇵 Yusuke Sakashita || K-1 World Grand Prix 2009 in Seoul || Seoul, Korea || Decision || 3 || 3:00 || 16-6
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 * 2009-05-06 || Loss ||align=left|🇮🇳 Singh Jaideep || J-Network Get Real in J-World 2nd || Japan || Decision (3-0) || 5 || 3:00 || 15-6
 * 2009-05-06 || Loss ||align=left|🇮🇳 Singh Jaideep || J-Network Get Real in J-World 2nd || Japan || Decision (3-0) || 5 || 3:00 || 15-6
 * - bgcolor="#CCFFCC"
 * 2009-03-29 || Win ||align=left|🇮🇷 Prince Ali || TITANS NEOS 5 || Tokyo, Japan|| Decision (3-0) || 3 || 3:00 || 15-5
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 * 2009-01-18 || Win ||align=left|🇯🇵 Keigo Takamori || M-1 Fairtex Challenge || Tokyo, Japan || KO (Body kick) || 4 || 1:33 || 14-5
 * 2009-01-18 || Win ||align=left|🇯🇵 Keigo Takamori || M-1 Fairtex Challenge || Tokyo, Japan || KO (Body kick) || 4 || 1:33 || 14-5
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 * 2009-08-09 || Loss ||align=left| Rico Verhoeven || K-1 World GP 2008 Hawaii || Honolulu, Hawai || Decision (3-0) || 3 || 3:00 || 13-5
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 * 2008-05-23 || Win ||align=left|🇯🇵 Shintaro Kiso || Smokers || Tokyo, Japan || KO (Uppercut) || 1 || 2:31 || 13-4
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 * 2008-08-04 || Win ||align=left|🇯🇵 Kuniyosh || TITANS || Tokyo, Japan || Decision || 3 || 3:00 || 12-4
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 * 2007-11-02 || Loss ||align=left|🇫🇷 Freddy Kemayo || K-1 Fighting Network Turkey 2007 || Istanbul, Turkey || TKO (Doctor stoppage) || 4 || 1:50 || 11-4
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 * 2007-09-26 || Loss ||align=left|🇧🇷 Fabiano Aoki || J-Network Tour Championship of J 2nd || Tokyo, Japan || Ext R. Decision (3-0) || 4 || 3:00 || 11-3
 * 2007-09-26 || Loss ||align=left|🇧🇷 Fabiano Aoki || J-Network Tour Championship of J 2nd || Tokyo, Japan || Ext R. Decision (3-0) || 4 || 3:00 || 11-3
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 * 2007-09-26 || Win ||align=left|🇯🇵 Niimura Yuki ||J-Network Championship Tour of J 2nd || Tokyo, Japan || Decision || 3 || 3:00 || 11-2
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 * 2007-08-03 || Win ||align=left|🇯🇵 Koya Hasegawa ||J-Network Championship Tour of J 1st || Tokyo, Japan || Decision || 3 || 3:00 || 10-2
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 * 2007 || Win ||align=left|🇯🇵 Hiromitsu Takayama || MA Kickboxing || Tokyo, Japan || Decision (3-0) || 3 || 3:00 || 9-2
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 * 2007-03-24 || Loss ||align=left|🇳🇿 Andrew Peck || HEAT 3 || Nagoya, Japan || Decision (3-0) || 3 || 3:00 || 8-2
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 * 2006-12-22 || Win ||align=left| Lee Jea Hun || MARS 6 Rapid Fire || Yokohama, Japan || Decision (3-0) || 3 || 3:00 || 8-1
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 * 2006-08-26 || Win ||align=left| Seol Bo Kyung || MARS 4 New Deal || Tokyo, Japan || KO (Left high kick) || 1 || 0:53 || 7-1
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 * 2006-07-31 || Win ||align=left|🇯🇵 Masashi Aoyagi || RISE XXVIII || Tokyo, Japan || Decision (3-0) || 3 || 3:00 || 6-1
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 * 2006-03-26 || Loss ||align=left|🇺🇸 Alex Roberts || RISE G-Bazooka Tournament '06 || Tokyo, Japan || KO (Right high kick) || 1 || 2:30 || 5-1
 * - bgcolor="#CCFFCC"
 * 2006-03-26 || Win ||align=left|🇧🇷 Fabiano Aoki || RISE G-Bazooka Tournament '06 || Tokyo, Japan || KO (Left hook) || 1 || 2:04 || 5-0
 * - bgcolor="#CCFFCC"
 * 2005-11-27 || Win ||align=left|🇯🇵 Yoichi Uchida || RISE XX || Tokyo, Japan || TKO (Doctor Stoppage) || 1 || 2:44 || 4-0
 * - bgcolor="#CCFFCC"
 * 2005-08-13 || Win ||align=left|🇯🇵 Wataru Suda || AJKF Cross Fire || Tokyo, Japan || KO (Right lowkick) || 3 || 1:55 || 3-0
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 * 2005-06-19 || Win ||align=left|🇯🇵 Hiroshi Sakai || RISE G-Bazooka Tournament '05 || Tokyo, Japan || KO (Knee to the body) || 3 || 2:29 || 2-0
 * - bgcolor="#CCFFCC"
 * 2005-04-24 || Win ||align=left|🇯🇵 Mr. Kamikaze || RISE XIV || Tokyo, Japan || Ext R. Decision (2-1) || 4 || 3:00 || 1-0
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