TOKYO - Ukrainian ozeki Aonishiki expressed relief Monday after capturing back-to-back championships at a "tense" New Year Grand Sumo Tournament.

The 21-year-old prodigy continued to dazzle the sumo world over the 15 days of competition at Tokyo's Ryogoku Kokugikan arena, culminating in his championship playoff victory Sunday over rank-and-file opponent Atamifuji.

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