Top-ranked maegashira Okinoumi added ozeki Kotoshogiku to his list of major scalps on Friday.

As a result, he remained unbeaten and tied for the lead on the sixth day of action at the Autumn Grand Sumo Tournament.

Okinoumi looked to be heading to his first defeat of the 15-day basho at Ryogoku Kokugikan as Kotoshogiku surged forward to put him up against the straw bales.