Cardinals–Cubs rivalry - Wikipedia
https://en.wikipedia.org/wiki/Cardinals%E2%80%93Cubs_rivalry
The Cardinals–Cubs rivalry, also called the Route 66 rivalry and The I-55 rivalry, refers to the rivalry between the St. Louis Cardinals and Chicago Cubs of the National League (NL), one of the most bitter rivalries in Major League Baseball and in all of North American professional sports. The Cardinals have won 19 NL pennants, while the Cubs have won 17.
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