iw ado , ▁with ▁their ▁rival ry ▁referred ▁to ▁as ▁the ▁H aku ho ▁era ▁after ▁a ▁combination ▁of ▁their ▁sh ik ona , ▁Sad ano y ama ▁in ▁fact ▁ended ▁up ▁winning ▁more ▁tournament ▁champion ships ▁than ▁K ash iw ado . ▁ ▁Sad ano y ama ▁announced ▁his ▁ret irement ▁suddenly ▁in ▁March ▁ 1 9 6 8 , ▁despite ▁having ▁won ▁the ▁previous ▁two ▁tournament s , ▁two ▁days ▁after ▁a ▁surprise ▁loss ▁to ▁a ▁new ▁ma eg ash ira , ▁the ▁Hawai ian ▁born ▁Tak ami y ama . ▁It ▁has ▁been ▁suggested ▁that ▁the ▁shock ▁of ▁losing ▁to ▁a ▁foreign er ▁may ▁have ▁prompt ed ▁a ▁prem ature ▁ret irement . ▁ ▁Ret irement ▁from ▁sum o ▁ ▁Sad ano y ama ▁remained ▁in ▁the ▁sum o ▁world ▁after ▁his ▁ret irement , ▁as ▁an ▁elder . ▁Having ▁married ▁the ▁daughter ▁of ▁the ▁previous ▁stable ▁b oss , ▁former ▁ma eg ash ira ▁D ew an oh ana ▁K uni ichi , ▁he ▁became ▁head ▁coach ▁of ▁the ▁D ew an ou mi ▁stable . ▁One ▁of ▁the ▁most ▁powerful ▁he ya ▁in ▁sum o , ▁he ▁produced ▁a ▁string ▁of ▁top ▁division ▁wrest lers , ▁including ▁M ien ou mi , ▁D ew an oh ana ▁Y osh it aka , ▁W ash ū y ama , ▁ Ō n ish iki , ▁Ry ō g oku , ▁O gin ish iki ▁and ▁Main ou mi . ▁ ▁In ▁February ▁ 1 9 9 2 ▁he ▁became