Sole overnight leader Onosho fell back to the pack with a loss to fellow rank-and-file grappler Chiyotairyu at the Autumn Grand Sumo Tournament on Friday.
Following his first defeat on Day 6 at Ryoguku Kokugikan, No. 9 maegashira Onosho is tied for the lead at 5-1 with five other wrestlers including ozeki Takakeisho and sekiwake Shodai.
With yokozuna Hakuho and Kakuryu both out of the 15-day tournament through injury, the race for the Emperor's Cup is wide open among a field that no longer includes any undefeated rikishi.