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Yokozuna Hakuho, who won the most 45 times in the history of sumo wrestling, has informed the Japan Sumo Association of his intention to retire, said Hironori Yano, chairman of the Yokozuna Deliberation Committee.
Hakuho has returned to Nagoya from six consecutive holidays due to surgery on his right knee.
In Chiakiraku, he defeated Terunofuji and achieved the 45th victory.
This was the last effort in active duty.