Ozeki wannabe Baruto showed no signs of cracking and rolled to his eighth win after overpowering Kyokutenho at the Spring Grand Sumo Tournament on Sunday.
Lone yokozuna Hakuho and surprise package Tokitenku all won handsomely to stay tied with Baruto at 8-0, but Harumafuji was condemned to his first defeat of the 15-day meet on a day of upsets for ozeki wrestlers.
Baruto rode his luck to preserve his unbeaten record in Saturday's bout against Kakuryu but he was never in any danger against his latest Mongolian opponent at Osaka Prefectural Gymnasium.
The Estonian drew Kyokutenho (1-7) in at the charge, got his right hand clamped onto the second-ranked maegashira's belt and calmly marched him out of the dohyo.