Mongolian grand champion Hakuho on Thursday pulled out of the Spring Grand Sumo Tournament due to injuries to his right toe and right thigh.

Hakuho sustained a big toe sprain and thigh muscle injury that will require three weeks of medical treatment, his stablemaster Miyagino said. His withdrawal comes a day after he crashed to his second loss on the fourth day of the 15-day meet at Edion Arena Osaka.

The 32-year-old Hakuho, the most successful wrestler in sumo history with 37 career titles, injured his thigh and toe in Wednesday's bout against top-ranked maegashira Ikioi.

The yokozuna had had surgery on his right toe to remove bone spurs after skipping the entire Autumn meet last September.

"He wasn't in good spirits and there was something strange about his sumo since he lost on the first day. He'll just have to start all over again," said Miyagino.

Hakuho's withdrawal is his first since missing the Autumn tournament last year and fifth overall. He forfeits Thursday's scheduled bout against komusubi Mitakeumi.

With Kisenosato making his debut at yokozuna, the Spring meet featured four grand champions for the first time in 17 years.

Kisenosato was the only yokozuna with a flawless 4-0 record going into Thursday's bouts.