|Born: August 2, 1906
San Francisco, California
|Died: November 28, 1989 (aged 83)
|Batted: Right||Threw: Right|
|April 23, 1938 for the Brooklyn Dodgers|
|Last MLB appearance|
|September 13, 1946 for the Boston Braves|
William John Posedel (August 2, 1906 - November 28, 1989), nicknamed "Barnacle Bill," was an American right-handed pitcher in Major League Baseball who played for the Brooklyn Dodgers and Boston Braves from 1938–1941 and in 1946.
Posedel was born in San Francisco, California. After his playing career, he was a coach for the Pittsburgh Pirates (1949–1953), St. Louis Cardinals (1954–1957), Philadelphia Phillies (1958), San Francisco Giants (1959–1960), Oakland Athletics (1968–1972) and San Diego Padres (1974). He also worked as a scout for the Pirates (1948), Cleveland Indians (1961) and Kansas City Athletics (1962–1967).