The younger half-brother of Rube,
Willie starred for big brother's American Giants club from 1923-1930.
Generally accepted as the best left-handed pitcher in black baseball
history, Foster performed at his best when the game was most important.
One example: he won the Negro National League pennant for the
American Giants in 1926 by starting and winning both ends of a
doubleheader to end the season against fellow Hall-of-Famer Bullet
Joe Rogan. A power pitcher, Foster had good control and threw
five different pitches well.