About Kaiketsu Masateru
Kaiketsu Masateru was a Japanese sumo wrestler, who reached the second highest rank of ōzeki on two occasions. He also won two top division tournament championships. After his retirement in 1979 he became a coach under the name of Hanaregoma-oyakata and established Hanaregoma stable. He was also chairman of the Japan Sumo Association from 2010 to 2012. However, in September 1976 ranked at maegashira 4, he took his second tournament championship with a 14–1 record, followed by consecutive 11–4 scores at sekiwake in November 1976 and January 1977. In September 1974 Kaiketsu turned in a make-koshi or losing score of 7–8 at sekiwake rank but then took his first top division yūshō or championship in November as a komusubi. He was promoted to ōzeki once again, alongside Wakamisugi, to whom he had a superior three tournament record.
Biography source: Wikipedia. The profile adds birthday-specific historical context from the Celebs Birthday Today editorial database.