Ron Shelton who played professionally in the Orioles farm system from 1967-71 (making it as high as AAA Rochester), wrote/directed the movie Bull Durham which came out (gulp) 35 years ago.
The character of Nuke LaLoosh was loosely based on the stories he had heard about pitcher Steve Dalkowski.
A year or so ago Shelton wrote a book about the making of the movie and a mutual friend assisted me in getting my copy signed: