 Eight of his championships were achieved with a perfect record of 15 wins and no losses ("zenshō-yūshō"), a record that stood until 2013 when it was broken by Hakuhō.He came back from a long term injury in 1968 and embarked on a 45 bout winning streak that was broken in March 1969 only after an incorrect decision by the judges.This caused such a furor that video replays were introduced after the incident.