Warren Edward Spahn was an American left-handed pitcher in Major League Baseball who played for 21 seasons, all in the National League. He won 20 games in 13 different seasons, including a 23-7 record when he was aged 42. Spahn was the 1957 Cy Young Award winner, and was the runner-up three times, all during the period when just one award was given. He was elected to the Baseball Hall of Fame in 1973.

Spahn was regarded as a "thinking man's" pitcher who liked to outwit batters. He once described his approach on the mound: "Hitting is timing. Pitching is upsetting timing."