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Help answer this question below.
There has never been a "switch", in the sense that there are still pitchers who throw the ball from below shoulder (or even waist in extreme cases) level - these are known as "submariners". However, up until 1883 the pitcher *had* to deliver the ball from below his waist: that year, the rules were changed to allow deliveries up to shoulder-height, and the following year almost all other restrictions on the delivery were removed.
The size and weight of the ball has remained unchanged since it was first regulated in 1872, so the answer to your second question is "no".
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You're reading When did major league baseball switch from underhand pitching to overhand? Did they use a softball-size ball in those underhand pitching days?
Comments
Wow, very detailed answer! Excellent!
by Joshua Zambrano on March 17th, 2006