Mosconi, Willie (William Joseph Mosconi)mŏskōˈnē, 1913–93, U.S. professional billiard player, b. Philadelphia. After a brief period as a child prodigy he did not take up the game again until 1931. He won his first world championship in 1941, and defended it successfully through 1955 in all years except 1943 and 1949. Beginning in the mid-1950s, Mosconi gave numerous exhibitions and helped to popularize the game. He wrote Willie Mosconi on Pocket Billiards (1954).
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