| Kaiketsu Masateru | |
|---|---|
| 魁傑 將晃 | |
 Kaiketsu as chairman on the opening day of September 2011 tournament. | |
| Personal information | |
| Born | Teruyuki Nishimori February 16, 1948 Yamaguchi, Japan |
| Died | May 18, 2014 (aged 66) Tokyo, Japan |
| Height | 1.88 m (6 ft 2 in) |
| Weight | 128 kg (282 lb) |
| Career | |
| Stable | Hanakago |
| Record | 528–410–0 |
| Debut | September 1966 |
| Highest rank | Ōzeki (March 1975) |
| Retired | January 1979 |
| Elder name | Hanaregoma |
| Championships | 2 (Makuuchi) 1 (Sandanme) 1 (Jonokuchi) |
| Special Prizes | Outstanding Performance (2) Fighting Spirit (7) Technique(1) |
| Gold Stars | 3 Kitanofuji Kotozakura Kitanoumi |
| * Up to date as of June 2020. | |
Kaiketsu Masateru (Japanese: 魁傑 將晃, born Teruyuki Nishimori; February 16, 1948 – May 18, 2014) 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.