OSAKA -- Komusubi Wakanosato slapped down defending champion Kaio and Musashimaru rolled to another one-sided win Saturday as the yokozuna emerged the lone leader seven days into the Spring Grand Sumo Tournament.

With the ozeki on the sidelines nursing his first loss of the 15-day tourney, Musashimaru rammed No. 4 maegashira Akinoshima out of the ring at Osaka Prefectural Gymnasium for his seventh straight win of the tournament.

Kaio's loss also gave hope to eight wrestlers with 5-2 records, including New Year champion Tochiazuma and fellow ozeki Musoyama, that their chances for the Emperor's Cup may reopen for them over the next eight days of the tournament.