What is "masaichi"

Masaichi (written: 雅一, 正一, 政一 or 政市) is a masculine Japanese given name. Notable people with the name include:

• (born 1933), Japanese baseball player

• (born 1917), Japanese World War II flying ace

• (1906–1985), Japanese film producer and baseball executive

• (1887–1993), Imperial Japanese Navy admiral