Ozeki Kotozakura grabbed a share of the lead Monday at the Summer Grand Sumo Tournament after rising star Onosato blew a chance to take sole ownership of first place.Kotozakura held off No. 5 maegashira Onosho following komusubi Onosato's upset loss to second-ranked maegashira Hiradoumi, creating a five-way tie atop the leaderboard at 7-2.The three other wrestlers tied for the lead are No. 7 maegashira Mitakeumi and 10th-ranked Shonannoumi, both winners on Day 9, and 16th-ranked Takarafuji, who lost after starting the day in a two-way tie with Onosato.Third-ranked maegashira Takayasu, meanw…READ FULL ARTICLE