The Jamestown Jammers were a minor league baseball team based in Jamestown, New York from 1994 until 2014. The team was the Short-Season A classification affiliate of the Pittsburgh Pirates and played in the New York–Penn League. The team played all of their home games at Russell Diethrick Park. Another team bearing the Jamestown Jammers name played in the Prospect League, an amateur collegiate summer baseball league, in 2015. A new Jammers team is set to play in 2016 as a member of the Perfect Game Collegiate Baseball League.