<prompt> Tlatša polelo ye e latelago:  <response>: Ka 2009 World Taekwondo Championships ka Copenhagen, Denmark, St. Bernard o ile a fedišwa ka go round ya mathomo ya basadi welterweight tiragalo ka morago ga go lahlegelwa ke Sun Ai-chi ya Chinese Taipei. Kua 2011 World Championships kua Gyeongju, Korea Borwa, o ile a se sa dumelelwa go tsenela phadišano ya gagwe ya mathomo ya basadi ya welterweight. 