Quote:
Originally Posted by G1911
ERA+ accounts for park. You made the claim that Koufax was very good through 1960. Your new argument now is that was very good in 1960 and 1961. Your original claim as quoted was and is demonstrably false. Your new version may not be.
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All I said was Koufax was very good up until 1961 and then starting in 1962 he was great. ERA + accounts for park, but not for the extreme differences in parks for various pitchers. The same way OPS+ doesn't account for the huge advantage some players had playing in Fenway Park or Coors Field.