Chicago Cubs vs St Louis Cardinals

The Cubs vs. Cards rivalry is one of the best in all of sports. But because there hasn t been a single postseason contest between the two and they only have a few one-two finishes in their 100-plus years of battling, we can t declare it one of the top three baseball rivalries of all time. How often has the pennant hinged on a late-season Cubs-Cardinals showdown? Not very often. But in early September 2003, St. Louis held a one-game lead over the Cubs in the NL Central race, when the Cardinals went to Wrigley for an incredible five-game set. Chicago took four of five to leap over the Cardinals and eventually claim their first division title in nearly two decades. But of course we all know how that ended.