Oh’s father saw baseball as a distraction from more important aspects of Sadaharu’s life, such as his education. Finally, in 1957 during a high school baseball tournament in which Oh pitched four complete games, his father realized his potential.
Not long after, in 1959, Oh was offered a contract by the Nippon Professional Baseball’s Yomiuri Giants as a pitcher. After initially struggling on the mound, the Giants soon realized Oh’s true potential was at the plate and converted him to a first baseman.
The transition to first base allowed Oh to focus on making what would become the turning point in his career. This was his development of a distinctive swing that became known as “the flamingo leg kick”. The swing was created by Oh and the hitting coach of the Giants, Hiroshi Arakawa, who happened to be an accomplished samurai swordsman. Together they combined elements of martial arts, Zen principles and baseball mechanics to create a brand new style of swing, specifically tailored to Oh.
Oh’s new swing and sensational power were first on display in 1960, when he blasted 17 home runs in his first full season. He then continued to showcase his power by hitting more than 30 home runs in every season from 1962 until he retired following the 1980 season. Upon his retirement, Oh had set baseball’s all-time home run record of 868, while also compiling 2,786 hits, 2,170 RBIs and a lifetime .301 batting average.