Since free agency began, there have been some awful signings. During the trade deadline, awful decisions are made.
This slideshow is not about those merely bad trades.
This slideshow is about the moves that, for whatever reason, seemed to mess with the psyche of a team. These are moves that look terrible on a stat sheet, of course, but they're moves that stick in the minds of fans as reminders not to make that mistake again.
These are 40 of those moves. From the bad signing of Barry Zito to a ridiculous 1900 trade that shaped a franchise, each one has left a mark on baseball fans.