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The Opsera Database
Authored by Christopher Reina - 17th March, 2009 - 8:08 pm

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17th Mar, 2009
The Worst Team Seasons Of All-Time (Opsera)

17th Mar, 2009
The Best Team Seasons Of All-Time (Opsera)

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The two team statistics I examine most closely to determine long term success are OPS and ERA. Teams that are amongst the top-10 in each of these categories tend to always play meaningful baseball in September and October, while teams that struggle in one or both are typically sellers in late July.

Win-loss records and run differentials certainly are the ultimate indicator of true success, but they can be flukish and over time the OPS and ERA should fall in line with the actual story and objectively identify good, bad and average teams.

I have named this system Opsera, which sounds like a real word and doesn't leave much to the imagination in the way of meaning. It is extremely simple; I take each team's total OPS, move the decimal point one place to the right and then just subtract their respective ERAs.

The All-Time Opsera Rankings

The Best Team Seasons Of All-Time

The Worst Team Seasons Of All-Time

Below is our full Opsera index for both teams and seasons.

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