was a Japanese professional sumo wrestler. He became the 48th yokozuna in 1961 at the age of 21, the youngest ever at the time. Kōki won 32 tournament championships between 1960 and 1971, a record that was unequalled until 2014. His dominance was such that he won six tournaments in a row on two occasions, and he won 45 consecutive matches between 1968 and 1969, which at the time was the best winning streak since Futabayama in the 1930s. He is the only wrestler to win at least one championship every year of his top division career. He was a popular grand champion, especially amongst women and children. After retiring from active competition, he became a sumo coach, although health problems meant he had limited success. When Kōki died in January 2013 he was widely cited as the greatest sumo wrestler of the post-war period. Since then Hakuhō, who regarded Taihō as a mentor, surpassed his record by winning his 33rd championship in January 2015. Early career Kōki's birth name was Ivan Boryshko. He was born on the island of Sakhalin (Karafuto Prefecture) to a Japanese mother Kiyo Naya and an ethnic Ukrainian father Markiyan Boryshko who had fled the Bolshevik Revolution. However, he is regarded as having come from Teshikaga, Hokkaidō, where he moved to as a child after the Soviet Union took control of Sakhalin in 1945. While on a sumo tour to the Soviet Union in 1965 he tried to locate his father, but without success. Taihō was the first of three great yokozuna who all hailed from Hokkaidō, the most northerly of the main islands of Japan and who among them dominated sumo during the 1960s, 1970s and 1980s. The others were Kitanoumi and Chiyonofuji. He entered sumo in September 1956, joining Nishonoseki stable. He initially fought under his real name of Naya Kōki. Upon promotion to the second jūryō division in May 1959 he was given the shikona (ring name) of "Taihō", meaning "Great peng" ("peng" is often translated to "phoenix"). Taihō rapidly rose through the ranks after his debut in the top makuuchi division in January 1960. He was a runner-up in his first top division tournament and was awarded the Fighting Spirit prize. At sekiwake rank in November 1960 he won the first of his former record 32 tournament championships and earned promotion to ōzeki. Following two consecutive tournament victories (his second and