John Costen Shockley
- Bats Left, Throws Left
- Height 6' 2", Weight 200 lb.
- High School Georgetown (DE) High School
- Debut July 17, 1964
- Final Game June 7, 1965
- Born February 8, 1942 in Georgetown, DE USA
Shockley, who had been a highly-touted prospect out of Delaware, still lived in Delaware in 2007. He had quit baseball after the California Angels told him he was being sent down to the minors in 1965. He went back to Delaware to work in construction. Source: Shockley article
He was named to the Delaware Sports Hall of Fame in 1998.
- Chip Greene: "Costen Shockley", in Mel Marmer and Bill Nowlin, eds.: The Year of Blue Snow: The 1964 Philadelphia Phillies, SABR, Phoenix, AZ, 2013, pp. 194-200. ISBN 978-1-933599-51-9