Yokozuna Onosato stayed in the outright lead Saturday at the Kyushu Grand Sumo Tournament by toppling rank-and-file opponent Ura and extending his perfect start to 7-0.Having barely broken a sweat through the first six days, Onosato looked momentarily challenged as acrobatic No. 3 maegashira Ura (3-4) attacked from a low angle before the five-time Emperor's Cup winner wrapped up the contest with a twisting overarm throw.The other grand champion, Hoshoryu, bounced back from his previous day's upset with a hard-fought win against veteran Tamawashi, but beleaguered ozeki Kotozakura slumped to …READ FULL ARTICLE