Hakuho overwhelmed fellow Mongolian Asashoryu on Sunday to finish the Summer Grand Sumo Tournament with a perfect 15-0 record.

News photoOzeki Hakuho waves his hands to the fan during the parade after winning the Summer Grand Sumo Tournament with a perfect 15-0 record on Sunday and securing the promotion to yokozuna. KYODO PHOTO

Hakuho, who is all but certain to be promoted to grand champion, wrapped up his second straight Emperor's Cup on Saturday, and Sunday's win over sumo's lone grand champion will add to his resume for promotion.