Twenty wins in a single season is a truly a magical plateau. Jim Bouton wrote in his classic book Ball Four, "If you had a pill that would guarantee a pitcher twenty wins, but might take five years off his life, he'd take it."
Baseball Almanac is pleased to present the pitchers from 1876 through 1889 who are members of the National League 20 Wins Club. Note: A bold faced entry denotes that the player was active during the previous Major League season. Quantities are cumulative, consecutive and include instances from other major leagues also.
"Dubbed Old Hoss for his dependability and endurance, Radbourne was a marvel even in an era when teams commonly used only two (2) starting pitchers." - Author Jack Kavanagh
In Chronological Order
Jim McCormick left the National League in 1884 to play in the Union Association. He missed making the National League list by one (1), yet went on to win a combined dual league total of forty-one (41) victories.