4-man, 5-man rotations
In what year would you suggest switching the league setting from 4-man to 5-man rotations? I spent some time on baseball-reference.com to look at the data, and it seems that by the late 60s most teams had gone to 5-man rotations, with some like the Dodgers and Orioles, sticking to 4. Is there a commonly agreed year when the transition was made? Thanks.
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