Kurashiki, Okayama
Ōyama played as professional from 1940 until his death in 1992. His students include Michio Ariyoshi, Isao Nakata and Hisashi Namekata. He was awarded as honorary citizen of Kurashiki, Okayama, his birthplace and then Hyakkoku, Aomori (now merged to Oirase, Aomori).