Newly promoted yokozuna Hoshoryu pulled out of the Spring Grand Sumo Tournament on Tuesday after suffering a right elbow injury and neck sprain requiring two weeks of recovery.In a challenging start to his debut at the sport's highest rank, the 25-year-old Mongolian had lost four of his first nine bouts at Edion Arena Osaka.He will drop to 5-5 at the 15-day meet after forfeiting his scheduled Day 10 match against rank-and-file opponent Ura.Hoshoryu's stablemaster Tatsunami said he aggravated his previously injured elbow during his loss to former ozeki Takayasu on Sunday."He said he couldn't…READ FULL ARTICLE