Having ascended to the top rank of yokozuna at a formidable pace, five-time Emperor's Cup winner Onosato faces one of the first major hurdles of his professional career at the New Year Grand Sumo Tournament opening Sunday at Tokyo's Ryogoku Kokugikan Arena.The 25-year-old grand champion has not fully recovered from the left shoulder injury that forced his withdrawal from the final day of the November tournament, but he is determined to contest the upcoming meet, starting with Sunday's battle against top-ranked maegashira Ichiyamamoto."There have been a lot of concerns, but it's important to…READ FULL ARTICLE