Yokozuna debutant Onosato will contest his maiden bout at the top rank against new komusubi Oshoma, with fellow grand champion Hoshoryu taking on troublesome opponent Takayasu when the Nagoya Grand Sumo Tournament opens Sunday.The Japan Sumo Association announced the matches Friday for the first two days of the 15-day tournament at the newly built IG Arena.Onosato is gunning for his third straight Emperor's Cup after securing yokozuna promotion at a record pace with back-to-back championships in March and May.His bout against Mongolian grappler Oshoma, debuting in the three "sanyaku" ranks …READ FULL ARTICLE