2010 in sumo
The following are the events in professional sumo during 2010. Tournaments Hatsu basho, Ryogoku Kokugikan, Tokyo, 10 January – 24 January Haru basho, Osaka Prefectural Gymnasium, Osaka, 14 March – 28 March Natsu basho, Ryogoku Kokugikan, Tokyo, 9 May – 23 May Nagoya basho, Aichi Prefectural Gymnasium, Nagoya, 11 July – 25 July Aki basho, Ryogoku Kokugikan, Tokyo, 12 September – 26 September Kyushu basho, Fukuoka International Centre, Kyushu, 14 November – 28 November News January 12: At the Hatsu basho in Tokyo, ozeki Kaio wins his 808th top makuuchi division bout by throwing down former ozeki Chiyotaikai, breaking the record set by Chiyonofuji in 1991. It is Chiyotaikai's third defeat in the first three days, leaving his hopes of getting promoted back to ozeki by scoring 10–5 or better virtually gone. 13: Chiyotaikai announces his retirement from sumo. He will stay in the sumo world as a coach at Kokonoe stable, under the name Sanoyama Oyakata. 19: The 65th Yokozuna Takanohana is told to leave the Nishonoseki ichimon or group of stables after announcing that he will run for a position on the board of Directors of the Japan Sumo Association against the two officially sanctioned candidates for the