Grand champion Hakuho will have surgery for a right knee injury that forced his withdrawal Tuesday from the Spring Grand Sumo Tournament.The 36-year-old yokozuna informed the Japan Sumo Association he needs surgery to treat a damaged right patella and swelling around the joint, followed by a likely two-month rehabilitation.His stablemaster Miyagino said Hakuho plans to return after recovering from the surgery and will decide whether to continue competing based on the results of his comeback tournament."He was told (by a doctor) that he couldn't wrestle in his current condition. He said he w…READ FULL ARTICLE