Yokozuna Onosato vowed Monday to remain a "strong yokozuna," a day after winning his first Emperor's Cup in a year at the Autumn Grand Sumo Tournament."A strong yokozuna should post 13, 14 or even a perfect 15 wins. I'll continue training hard toward that goal," Onosato said at a news conference at his Nishonoseki stable in Ami, Ibaraki Prefecture.Onosato, who has been plagued by a left shoulder injury sustained in last November's tourney, captured his sixth title with a 12-3 record by beating Ukrainian ozeki Aonishiki in the final bout of the 15-day tournament.The grand champion had built …READ FULL ARTICLE