NAGOYA, Japan — Grand champion Hakuho collected an easy victory against Wakanosato on Monday, staying in the sole lead with a perfect record at the Nagoya Grand Sumo tournament.

Bidding for his seventh Emperor's Cup, the Mongolian yokozuna quickly seized Wakanosato's belt and threw down the No. 4 maegashira to the dirt in the day's final bout at Aichi Prefectural Gymnasium. Hakuho improved to 9-0 on the ninth day of the 15-day tournament. Wakanosato slipped to 4-5.

Ozeki Kotomitsuki and sekiwake Ama each had second defeats, falling two victories behind the leader and sharing the three-way second spot at 7-2.

Mongolian Ama landed on his shoulder as Wakanoho, a top maegashira from Russia, threw himself on top of the sekiwake. Wakanoho collected his first victory this tournament.

Kotomitsuki was slammed down to the dirt as he aimed too low in tackling Futeno's legs. Futeno, a No. 3 maegashira, improved to 2-7.

Bulgarian ozeki Kotooshu charged No. 4 maegashira Goeido with a series of hand thrusts, sending the opponent out of the straw ridge, improving to 6-3.

In an all champion match, Chiyotaikai pressed his hands against kaio's shoulders, slamming him down to the dirt and improving to 7-2. Kaio fell to 5-4.