Team Logo. The Lehigh Valley Black Diamonds were a team in the Atlantic League of Professional Baseball. One of their games in 2001 had a total attendance of 2 people. They folded in 2001 and were replaced by the Pennsylvania Road Warriors. Retrieved from "https://prosportsteams.fandom.com/wiki/Lehigh_Valley_Black_Diamonds?oldid=12298" Categories: Former Atlantic League Teams Teams in Pennsylvania Add category Cancel Save Community content is available under CC-BY-SA unless otherwise noted.