Scoring

[KCGHOST]

Of all the pitchers who started their careers in the modern era (1900 or later) only Doc White, Ray Caldwell, Christy Mathewson, and Chief Bender,did this. What is "this".

[KCGHOST]

They are the only players whose primary position was as a pitcher, who started their careers in the modern era, to steal 20+ bases. The number of teams is immaterial to the answer.

[KCGHOST]

By the way I worded this I should have included Jack Coombs and Johnny Lush. More careful wording would have limited the answer to just seasons in which the player was primarily a pitcher. My bad.