Sekiwake Tochinoshin maintained his perfect record and sole share of the lead Thursday with a breakthrough victory over yokozuna Hakuho on Day 12 of the Summer Grand Sumo Tournament.

The sekiwake came into the final bout of the day at Ryogoku Kokugikan without a single win in 25 previous attempts against the all-time championship record-holder.

After a false start by Hakuho, the pair locked up in the center of the ring, each gripping the other's belt.