Yokozuna Hakuho and ozeki Terunofuji, who is aiming for promotion to that same exalted rank, each won on Friday to remain undefeated co-leaders after six days at the Nagoya Grand Sumo Tournament on Friday.

Hakuho, who is coming off right knee surgery in March, beat No. 3 maegashira Hokutofuji (3-3). The 36-year-old yokozuna has won a record 44 grand tournaments, but has missed all or part of the previous six meets, and needs a solid record over 15 days at Dolphins Arena to stave off retirement.

Facing a wrestler who relies heavily on thrusting and shoving, Hakuho rocked Hokutofuji back on the charge before stepping back and luring his opponent in. When Hokutofuji rushed forward into the trap, Hakuho slapped him down to seal the victory.