Originally posted by leecemark
--I'd agree that some of the difference in hitting/pitching in eras might be attributed to talent distribution. This is more likely to be the case when conditions haven't changed much, but the balance shifts anyway. However, conditions did change dramitically around 1920 and it took a decade and a half or so for the balance to start returning. Pitchers had to adapt to the live/clean balls and banishment of trick pitches. Batters had a field day while pitchers were learning to adapt and adding new pitches to replace the spitter/shine/emery balls. That is all about conditions and little to none about the talent level of hitters/pitchers.
1930, NL: .303/.358/.448
1935, NL: .277/.328/.391
This wasn't a situation ripe for offensive outbursts from every Tom, Dick, and Harry; this was a situation where there was an aberation in 1930 that didn't really translate to the rest of the time. Offensive levels were elevated in 1930 because of conditions that were specific to the time and not a result of leftover aftershocks from the introduction of the live ball. By 1935, it certainly had nothing to do with anything.
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