Leading the list: the Cincinnati Reds of 1973, a powerful group led by Johnny Bench, Pete Rose and Tony Perez that took a tough National League West division over the Dodgers and Giants before getting upset in the NL Championship Series by the New York Mets, three games to two.

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They're moving from the National League Central, a relatively weak division, to the American League West, one of baseball's toughest.

WSJ: The Houston Astros School of Economics

The National League West is comprised of large ball parks and it is a division that is almost up for grabs every season.

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