Camilo Pascual left Cuba in 1951 at the age of 17, and a year later, he was part of the Washington Senators farm system. Pasucal was impressive, and he made the main roster in Washington in 1954.
Matt Williams was a cornerstone of the San Francisco Giants for a decade (1987-96), where he played in the infield, switching between Third Base and Shortstop.
Many of the early baseball players suffered from an addiction to alcohol, but we have to wonder if any of them had anything on Pete Browning, an Outfielder who once quipped, "I can't hit the ball until I hit the bottle." He hit the bottle a lot, but he also hit the baseball at a high level.
Lon Warneke played his entire career in the National League, splitting his run with rivals Chicago and St. Louis.