...and you thought I was kidding. Charlie Finley's KC A's had Alan Lewis, who was used mostly as a pinch runner, and often used pitcher John Odom as a pinch runner. Finley liked the idea so much that he hired Herb Washington around 1974 to the Oakland A's, where he never hit or fielded. See: http://en.wikipedia.org/wiki/Herb_Washington
It notes that Washington's baseball card listed him as "Pinch Runner".