九重部屋
Ōnokuni's first tournament as "yokozuna" finished with a disappointing 8–7 score, but in March 1988 he beat "yokozuna" Hokutoumi in a play-off to achieve his second tournament championship. However, the Kokonoe stable "yokozuna" Chiyonofuji and Hokutoumi were to prove dominant over the next few tournaments and he never won another tournament. He scored a famous victory over Chiyonofuji on the last day of the November 1988 tournament, however, ending Chiyonofuji's 53-bout winning streak in what turned out to be the last sumo match of the Shōwa period.