D0354000 (dŭb′əl-dā′), Abner 1819-1893. American army officer traditionally considered the inventor of baseball, although a game similar to modern baseball predates him.
Dou•ble•day
(ˈdʌb əlˌdeɪ)
n. Abner, 1819–93, U.S. army officer: sometimes credited with inventing baseball.