Mongolian yokozuna Asashoryu continues to stamp his authority as the lone yokozuna and Russian wrestler Roho jumped up to a career high in the rankings for the Summer Grand Sumo Tournament issued by the Japan Sumo Association on Monday.

There were no major surprises in the rankings involving leading wrestlers, including Asashoryu, who goes into the 15-day meet beginning May 8 at Tokyo's Ryogoku Kokugikan bidding for a fourth straight Emperor's Cup and 12th overall of his career after his triumph in March in Osaka.

Roho climbed up to top maegashira, the fifth highest rank in the sport, after finishing the spring tournament with an impressive 11-4 record as a No. 6 maegashira. He is ranked third highest, after Asashoryu and sekiwake Hakuho, among an increasing number of foreign wrestlers in the top-tier makuuchi division.