Walter Johnson had a dead ball era of: 1.66. He had a live ball era of: 3.45. His era the last year of dead ball: 1.49, the first full year of live ball: 3.51. In 1920 he was 33 years old, so it could be a natural decline, but it's a pretty dramatic increase in era. If he pitched only in the live ball era, do you think he would be as legendary as he is now?
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