NAGOYA - Yokozuna Onosato fell to a worrying opening day defeat while his fellow returning grand champion, Hoshoryu, triumphed as the Nagoya Grand Sumo Tournament began on Sunday.

After missing the majority of the last two tournaments with left shoulder pain, Onosato bettered new komusubi Yoshinofuji in the opening clash but quickly resorted to an ill-fated pull-down attempt and was easily pushed out at a stunned IG Arena in Nagoya.

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