Waterloo Diamonds

{{short description|Professional minor-league baseball team in Waterloo, Iowa (1989–1993)}}

{{more citations needed|date=March 2025}}

{{Use mdy dates|date=May 2025}}

The Waterloo Diamonds was a baseball team located in Waterloo, Iowa that formed in 1989 and lasted until 1993.{{cite news |last1=Yates |first1=Dan |title=Letters to the Editor: Out at the Ball Park |url=https://www.newspapers.com/article/the-courier-letters-to-the-editor-out-a/168055695/ |access-date=15 March 2025 |work=The Courier |date=4 April 1989 |pages=4}}{{cite news |last1=Smith |first1=Russ L. |title=Diamonds Drop Home Opener, 6-5 |url=https://www.newspapers.com/article/the-courier-diamonds-drop-home-opener-6/168055687/ |access-date=15 March 2025 |work=The Courier |date=16 April 1989 |pages=39}}{{cite news |last1=Stasen |first1=Marty |title=Diamonds Baseball Detailed in new Book |url=http://newspapers.com/article/the-courier-diamonds-baseball-detailed/168056184/ |access-date=15 March 2025 |work=The Courier |date=25 June 1995 |pages=15}}{{cite news |title=For Waterloo, it's play ball no more |url=https://www.newspapers.com/article/the-courier-for-waterloo-its-play-bal/168056311/ |access-date=15 March 2025 |work=The Courier |date=29 March 1994 |pages=16}} 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.