Hakuho remained alone at the top of the leaderboard after beating Tamawashi at the Kyushu Grand Sumo Tournament on Sunday.
Having started the second week of the meet as outright leader, Hakuho made sure it stayed that way by forcing out the No. 4 maegashira in the final bout of Day 8 at Fukuoka Kokusai Center.
The sole competing yokozuna continued his career dominance over his fellow Mongolian-born wrestler, who has won just one of their 17 top-level meetings.