Yokozuna Terunofuji overcame a severe challenge from No. 4 maegashira Wakamotoharu on Sunday to join the leading pack with his sixth win at the Nagoya Grand Sumo Tournament.
The eighth day's final bout at Dolphins Arena proved to be a show-stopper.
Seven-time champion Terunofuji endured more than two minutes of action in the ring punctuated by a 10-minute break after Wakamotoharu's silk mawashi belt came undone, forcing the referee to pause the fight.