Career
His highest rank was komusubi. He retired in January 1988 and is currently an elder in the Japan Sumo Association under the name Yamashina. He joined sumo in May 1968 at the age of just 14, competing under his own surname of Obori.
He was considered a very promising prospect and after winning his first jūryō division championship in May 1973 he was given the shikona or fighting name Ōnishiki, after a great wrestler from his Dewanoumi stable, the 26th yokozuna Ōnishiki Uichirō.
He was also runner–up in this baho and earned his first kinboshi or gold star by defeating yokozuna Kotozakura. He was promoted straight to komusubi, which was to be his highest rank, but he suffered a serious back injury and scored only 3–12.
He never made the rank again. As well his back problem he also suffered from knee problems and diabetes, and spent the rest of his career moving up and down the ranks of the two salaried divisions.
He only fell to the third makushita division once during this period though.
In this tournament in May 1979 at makushita 1 he posted a perfect 7-0 record, took the championship, and also handed Itai his first defeat in professional sumo, ending a consecutive winning streak from debut which was a record at that time. He retired in January 1988 rather than face demotion to the makushita division again. Onishiki has remained in sumo as a toshiyori or elder, and is known as Yamashina Oyakata.
Onishiki was a yotsu sumo specialist who favoured hidari yotsu, or a right hand outside, left hand inside grip on his opponent′s mawashi.
His favourite kimarite or techniques were yori kiri (force out) and uwatenage (overarm throw).
