The Waterloo Diamonds was a baseball team located in Waterloo, Iowa that formed in 1989 and lasted until 1993. A member of the Midwest League, they were affiliated with two teams in 1989, the Baltimore Orioles and San Diego Padres, and the franchise was a descendant of the Waterloo Hawks. From 1990 to 1993, they were affiliated solely with the Padres. Their stadium was Riverfront Stadium.
Year-by-year record Year Record Finish Manager Playoffs 1989 47-89 14th Jaime Moreno 1990 60-76 11th Bryan Little 1991 75-63 4th Bryan Little 1992 59-78 12th Keith Champion 1993 54-79 13th Ed Romero
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