Masao Yoshida (吉田 正男, Yoshida Masao; April 14, 1914 – May 23, 1996) was a Japanese amateur pitcher originally from Ichinomiya, Aichi. He had 23 wins at Spring and Summer Koshien. In the National High School Baseball Championship between 1931 and 1933, he won 14 consecutive games at Koshien Stadium and he became the only pitcher to win three consecutive championships.
Source: “Masao Yoshida (baseball)”, English Wikipedia (CC BY-SA 4.0), excerpt