Yokozuna Hakuho and Kakuryu maintained their share of the lead by staying unbeaten Wednesday at the Nagoya Grand Sumo Tournament.

The two Mongolians improved to 4-0 with victories over komusubi opponents on the fourth day of the 15-day tournament at Dolphins Arena.

In the closing bout, all-time championship record-holder Hakuho won his first career meeting with newly promoted Ryuden (2-2).