Koichi Watanabe (Japanese: 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.
كويتشي (باليابانية: コウイチ) هو ملاكم كيك بوكسينغ ياباني، ولد في 26 أكتوبر 1980 في نيغاتا في اليابان، وتوفي في 7 أبريل 2018. (ar)
Koichi Watanabe (Japanese: 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. (en)