The way he became a Cub is almost a fluke. At the end of the 1953 season, Gene Baker was called up to be the first African-American Cubs player. Ernie was signed shortly thereafter from the Kansas City Monarchs. They signed Ernie strictly because they needed another black player to room with Baker. If they didn’t have Baker, they wouldn't have signed Banks. They honestly had no idea what they were getting in Banks, either. One of the Cubs coaches, Ray Blades, gave Ernie a book called "How to play baseball" even though he had hit .380 for the Monarchs.
Banks only got in the lineup first because Baker was hurt (he got into a game three days later). At the time, inserting Banks into the lineup was a very controversial move, because shortstop was considered a "thinking man's" position, and Banks was the first African-American in Major League history to play shortstop on a regular basis.
Needless to say, it worked out just fine.
