Perhaps the newest of the breaking pitches is one called the slider, which almost every pitcher uses these days.
The late George Blaeholder is generally credited with the development of the pitch in the early thirties, but I cannot testify to the truth of this.
-- Bob Feller in "Pitching to Win" (1948)
I cannot testify to that, either.
There is no Eureka! moment for the slider, in large part because nobody really knows when, or even approximately when, the first slider ...Read full story