Undefeated rank-and-filer Onosho took sole possession of the lead at the Autumn Grand Sumo Tournament on Thursday after top-division rookie Tobizaru suffered his first loss.

Ozeki Takakeisho and sekiwake Shodai headline a group of seven wrestlers trailing the unanticipated leader by a win at 4-1 after five days of action at Tokyo's Ryogoku Kokugikan.

With both yokozuna out with injuries and the remaining top-ranked grapplers struggling to deliver, former komusubi Onosho has a fighting chance of winning his first makuuchi division title at the 15-day meet.