The Cardinals trade Curt Flood along with Byron Browne, Joe Hoerner and Tim McCarver to the Philadelphia Phillies in exchange for Dick Allen, Jerry Johnson, and Cookie Rojas. When Flood refuses to report to Philadelphia, St. Louis will send Willie Montanez and a minor leaguer to complete the trade, but the outfielder’s courageous challenge to the reserve clause will have a dramatic impact on the game. This was in 1969.
The Cardinals released Doug DeCinces in 1987.
Steve Torrealba of the Cardinals granted free agency in 2003.
The Cardinals, in 2019, win Game 4 of the NLCD, with a long sacrifice fly by Yadier Molina to score Kolten Wong to move the series clincher back to Atlanta. Starter Miles Mikolas pitched the 10th inning in relief to get the win.