Rank-and-filer Midorifuji held his own against Bulgarian Aoiyama and has a one-win lead at the midway point of the 15-day tournament.
Ozeki Takakeisho had his hands full but came out on top on Day 8. Kotoshoho is the other wrestler with seven wins in the 15-day tournament.
With grand champion Terunofuji sidelined with knee injuries, lone ozeki Takakeisho is the tournament's highest-ranked wrestler.
The No. 8 maegashira is off to his best start ever and is one win ahead of Tamawashi at the 15-day tournament.
The grand champion was halted mid-bout, then came back to beat Wakamotoharu in a highly unusual display of sumo.