Which type of pitch was banned from professional baseball in 1920 due to the death of Ray Chapman?
A spitball is an illegal baseball pitch in which the ball has been altered by the application of saliva. This technique alters the wind resistance and weight on one side of the ball, causing it to move in an atypical manner. In August 1920, Ray Chapman was killed when he was struck in the temple by a spitball thrown by pitcher Carl Mays. Following the season, the spitball was banned, except for existing spitballers who were grandfathered in and allowed to keep throwing the pitch until they retired. Seventeen existing spitballers were granted this exemption.
The correct answer is Spitball.