Source: Associated Press 
With the Cardinals in the 1920s and `30s, Branch Rickey established the first farm system; then with the Brooklyn Dodgers, he signed Jackie Robinson, who broke baseball’s color barrier in 1947.
In building a contender in recent years, the Cardinals have relied on the tool Rickey pioneered nearly a century ago – a solid pipeline of talent from their farm system.
The Dodgers have relied more on high-priced stars.
This series could help answer that question of which approach is better.