Grand champion Musashimaru swatted Daizen out of the ring to remain undefeated Saturday but stablemate Musoyama fell to a second loss at the hands of ozeki-killer Aminishiki at the Summer Grand Sumo Tournament.

Musashimaru did not budge once as he calmly pushed and shoved No. 4 maegashira Daizen around the ring and over the edge for a comfortable win in the day's finale at Tokyo's Ryogoku Kokugikan.

The Samoa-born yokozuna now shares the lead in a three-way tie with ozeki Chiyotaikai and rank-and-filer Kyokushuzan, who has used a different technique to dispose of his opponents on each of the first seven days of the basho.