Onosato, 24, promoted to sumo grand champion in record time

The 24-year-old's elevation by the Japan Sumo Association came after he appeared in just 13 professional tournaments, eight fewer than the current record holder. The wrestler, who weighs 191kg (421lb, 30 stone) and is 1.92 metres (6ft 3in) tall, became the 75th grand champion in the centuries-old history of sumo. He was the second to reach the top rank in the space of four months, following Hoshoryu's promotion in January. The two will go head-to-head for the first time as yokozuna in July in Nagoya.