Ramba uchinyora ndima iyi - Yamaguchi akakwikwidza paWorld Men's Curling Championships katanhatu mubasa rake. PaWorlds 2009 muMoncton, New Brunswick, Canada, akatamba wechitatu wechikwata cheJapan, chakaisa chegumi mumakwikwi; PaWorlds 2013 muVictoria, British Columbia, Canada, akatamba wechitatu wechikwata cheJapan, chakaisa gumi nerimwe mumakwikwi; PaWorlds 2014
muBeijing, China, akatamba wechitatu wechikwata cheJapan, icho chakaiswa chechishanu mumakwikwi; PaWorlds 2015 muHalifax, Nova Scotia, Canada, akatamba wechitatu wechikwata cheJapan, icho chakaiswa chechitanhatu mumakwikwi; PaWorlds 2016 muBasel, Switzerland, akatamba wechipiri wechikwata cheJapan, icho chakaiswa chechina mumakwikwi; uye paWorlds 2017 muEdmonton, Alberta, Canada, akatamba wechipiri wechikwata cheJapan, icho chakaiswa chechinomwe mumakwikwi. Akatamba wechipiri weYusuke Morozumi rink uye akamiririra Japan kuma2018 Winter Olympics, achipedza ari pachinzvimbo chechisere.