E.J. Block Athletic Field is a stadium in East Chicago, Indiana. It is primarily used for baseball, and is the home field for Calumet College of St. Joseph's Crimson Wave Baseball team which play in the CCAC. It is also the home park of the East Chicago Central High School baseball team and the East Chicago Post 369 American Legion summer baseball team, respectively.
It originally opened in 1942.
The stadium first served a professional team in 1995 as the East Chicago Conquistadors called it home, for their first and only season. The team brought in an average crowd of 94 fans per game.