Below you can find the 455-pound chad rowan became the first american grand champion of this japanese sport Jeopardy Words Answer. The answer to 455-pound chad rowan became the first american grand champion of this japanese sport has 4 letters. This clue belongs to the Sports category and is part of Jeopardy Word Level 1829. If you scroll near the bottom you will find other clues and answers part of level 1829