Yokozuna Onosato and Hoshoryu vowed Monday to throw their weight behind the promotion of their sport at the upcoming Grand Sumo Tournament in London, the first visit to the British capital by the Japan Sumo Association in 34 years.The two grand champions were both occupying the second-highest rank of ozeki when the JSA's first overseas exhibition tour in 20 years was announced in December. Since then, they have become the faces of the ancient sport by reaching the top echelon."I want sumo to get even more popular worldwide," said Onosato, who arrived in London on Saturday and did not waste …READ FULL ARTICLE