Yokozuna Hoshoryu stumbled to his second defeat after six days at the Nagoya Grand Sumo Tournament on Friday as Ukrainian rank-and-filer Shishi became the only wrestler boasting a perfect record.Hoshoryu (4-2) was seemingly in a comfortable position against Hakunofuji (5-1) after quickly securing a left overarm belt hold, but the No. 3 maegashira showed good tenacity to stay inside the ring at Nagoya's IG Arena.While the grand champion went for a forceful right armlock throw, Hakunofuji stood firm and came up with a spectacular twisting backward knee trip as both wrestlers fell to the groun…READ FULL ARTICLE