Ku sii wad qodobkan - Yamaguchi wuxuu ka qeybgalay tartanka curling-ka ragga ee adduunka lix jeer intii uu shaqeynayay. Koobkii Adduunka ee 2009 ee Moncton, New Brunswick, Canada, wuxuu ciyaaray kaalinta saddexaad ee kooxda Japan, oo kaalinta tobnaad ka gashay tartanka; Koobkii Adduunka ee 2013 ee Victoria, British Columbia, Canada, wuxuu ciyaaray kaalinta saddexaad ee kooxda Japan, oo kaalinta 11aad ka gashay tartanka; Koobkii Adduunka ee 2014
Beijing, Shiinaha, wuxuu ciyaaray kaalinta saddexaad ee kooxda Japan, oo kaalinta shanaad ka gashay tartanka; At the 2015 Worlds in Halifax, Nova Scotia, Canada, wuxuu u ciyaaray kaalinta saddexaad ee kooxda Japan, oo kaalinta lixaad ka gashay tartanka; At the 2016 Worlds in Basel, Switzerland, wuxuu u ciyaaray kaalinta labaad ee kooxda Japan, oo kaalinta afaraad ka gashay tartanka; iyo at the 2017 Worlds in Edmonton, Alberta, Canada, wuxuu u ciyaaray kaalinta labaad ee kooxda Japan, oo kaalinta toddobaad ka gashay tartanka. Wuxuu u ciyaaray kaalinta labaad Yusuke Morozumi rink wuxuuna Japan u matalayay ciyaarihii Olombikada ee xilliga qaboobaha ee 2018, isagoo ku dhammeeyay kaalinta 8aad.