Yokozuna-chasing Harumafuji's bitter experiences of the past are paying off in a big way.

Harumafuji outfoxed Toyonoshima in tactical fashion to retain his place in a share of the lead with yokozuna Hakuho and veteran Kyokutenho with undefeated 9-0 records at the Autumn Grand Sumo Tournament on Monday.

Two of the five overnight leaders, including ozeki Kisenosato and rank-and-filer Takayasu, fell to their first defeats, leaving three men at the top and three with 8-1 marks as the 15-day meet enters the final six days.