Results of main matches on the ninth day of the Summer Grand Sumo Tournament, May 16, at Kokugikan at Kuramae, Tokyo.

Kotogahama beat Naruyama
Hajimayama beat Tokitsuyama
Dewanishiki beat Futaseyama
Ouchiyama beat Shinobuyama
Wakanohana beat Matsunobori
Tochinishiki beat Onobori
Mitsuneyama beat Kuninobori
Chiyonoyama beat Futatsuryu
Kagamisato beat Asashio